Build a Musical Sentence: Present, Repeat, Continue

Play a two-bar idea twice, then reuse a short, recognizable part of it. In our example, that fragment is the opening pair of quarter notes. Repeat the pair, move it up a scale step, and aim toward a cadence. You have the beginnings of a musical sentence: an opening that establishes an idea, followed by music that develops momentum and brings it to an ending.

You will build an original eight-bar example in C major, then compare it with a period. You can sing the melody, play it on your instrument, or enter it into notation software. Chord symbols supply the harmonic plan; no four-part writing is required. Keep a pencil nearby: the useful result is your own completed phrase.

1. Give “sentence” its specific meaning

Teachers sometimes call any musical phrase a sentence, meaning a thought with a beginning and ending. Our Phrase and period sheet uses that everyday comparison. Here, sentence names a formal design used in analysis of Classical-style tonal music: presentation followed by continuation. The terms describe what the music does as it unfolds.

For this first composition, use 2 + 2 + 4 bars: a two-bar basic idea, its two-bar repeat, then a four-bar continuation ending with a cadence. The first four bars present the material; the last four carry it onward. Open Music Theory’s sentence chapter provides the underlying presentation-and-continuation distinction.

Read the plan at two levels. The four-bar presentation contains a basic idea and its repeat; the four-bar continuation contains shorter units and the ending. Each box occupies two bars, but the units inside the third box are only two beats long. These proportions belong to the introductory composition used here. Count the large functions in bars and the short heads in beats. The first basic idea spans two complete 4/4 bars; each continuation head spans half of one bar. Keeping these units distinct prevents a two-bar box from implying a two-bar fragment.

Think of a function as a job rather than a box on the page. The same notes can help establish an idea early and help finish it later, depending on their grouping and harmonic context. Mark what you hear happening before assigning a formal label. A diagram records an interpretation; it cannot substitute for hearing the music unfold.

Eight bars are a useful constraint, not a universal definition. Sentences can expand, and a continuation need not display every possible sign of momentum. The University of Nebraska’s phrase-form chapter makes that flexibility explicit. First learn to make the functions audible within a small, controlled design.

2. Write a two-bar basic idea

Set 4/4 and choose C major. Write C4 and E4 as quarter notes, then G4 as a half note. In bar 2, write E4 and D4 as quarters, then C4 as a half. C4 means middle C. Count “1, 2, 3–4” in each bar; the two-bar idea lasts eight quarter-note beats.

The complete basic idea occupies two bars: C4 quarter, E4 quarter, G4 half | E4 quarter, D4 quarter, C4 half. Both bars use the same duration pattern, but their contours differ. Sing the whole eight-beat span before choosing a smaller fragment; the opening C–E pair will become useful later. The first bar supplies the head and the high point, G4; the second supplies the return. Keep both half notes long enough to hear the whole unit. That complete rise and return is what the exact repetition will establish.

The opening outlines C–E–G, the tonic triad. The second bar returns through E–D–C; D connects two chord tones. Hum it once without accompaniment. Then play a quiet C-major chord beneath each bar. The melody has a recognizable rise and return without needing a complicated rhythm.

Check the two bars before copying them. Each contains 1 + 1 + 2 = 4 beats, so there is no missing beat to fill and no note to squeeze across a barline. Tap four even pulses while singing each bar. Hold G and the final C for both beats allotted to them; otherwise your later comparison of activity will be misleading.

A basic idea is the complete opening unit in this design. A motif can be smaller: the first C–E pair is just two beats. Motif and sequence introduces recognizing and reusing short material. Here you will assign that reuse a place in a larger phrase.

For your first independent version, keep C major, 4/4, and the printed harmony. Choose two opening quarter notes from C, E, and G that also belong to A minor: C–E or E–C. Complete the two-bar idea over C major without adding a cadential progression, then repeat it exactly. Save it for the continuation task in section 7.

3. Repeat the idea over tonic support

Copy bars 1–2 into bars 3–4 exactly: same pitches, octaves and durations. Label both two-bar units “basic idea,” then bracket bars 1–4 as “presentation.” Use I, the C-major tonic chord, throughout. This is the simplest tonic support. In other sentences, intervening chords can decorate or prolong tonic; presentation does not require an unchanged I chord in every bar. Exact repetition makes this first example easy to compare by eye and ear. The brackets show analytical groups, not articulation marks.

Bars 3–4 repeat bars 1–2 event for event. The four I labels allow the accompaniment to be rearticulated at barlines while keeping the same harmony. Listen across the middle barline: the second statement reinforces the opening material. The presentation ends on C, but no dominant-to-tonic progression has been supplied there. The bracket ends after bar 2 because that is where the complete idea finishes; the next bracket starts with its return at bar 3. Say “idea, repeat” while counting four beats in each bar to connect the analysis to the sounding durations.

Try one pass with a small space after bar 2, then another with a steady pulse through all four bars. The space can help you recognize the unit during practice, but it does not insert a rest into the written model. Return to the printed durations when you perform the complete sentence. A breathing choice and a notated silence are different decisions.

Repetition does not have to mean exact copying in every sentence. Puget Sound’s sentence lesson includes altered and sequential restatements. Try changing only the last bar of the repeated idea to E4 quarter, D4 quarter, E4 half over I. Its opening, rhythm, and rise-and-return shape still recall the first statement, although the ending differs. Compare that with replacing both bars by unrelated material.

The repeat retains the opening C–E–G and the quarter-quarter-half rhythm. Only its final C changes to E, another tonic-chord tone. The brackets identify the original eight-beat idea and its varied repeat; both still support the presentation. Compare bar 2 with bar 4 directly: E–D–C becomes E–D–E. Both use quarter, quarter, half; both stay within the same range as the opening statement. Changing an ending can therefore preserve a recognizable relationship across the full two-bar span.

Arriving on the tonic note does not, by itself, establish a cadence. Return now to the original exact-repeat model: its bar 4 lands on C over continuing C-major harmony. That C repeats the end of the basic idea; it has no supplied cadential progression. Play bars 3–4, then compare the separate V7–I ending below.

Upper row: the repeated idea stays over I. Lower row: V7 approaches the final I. Both end on C4; listen to how the changed harmonic approach affects closure. In the lower comparison, V7 supports the whole first bar, unlike the main sentence’s half-bar I6 and half-bar V7. Keep that separate-test label in mind when you return to the complete score and supply its accompaniment.

An Idea, Its Repeat, and a Push to the End puts the complete model beside a role map and a period comparison. Its sentence matches ours; its period comparison uses a different melody, so compare the formal roles and cadence locations rather than matching every note. Use the opening four bars to test this distinction: repeated material can establish an idea without providing an antecedent’s ending.

Name the jobs before adding detail: present the idea, develop forward motion, and make an ending. The last two jobs belong within the continuation in this model. These labels describe a process through time; they do not require a new melody for each panel. Use this order when planning the phrase: let the listener learn the idea before developing it, then reserve enough space for the harmonic approach and final arrival.

4. Shorten the idea into fragments

Take only C4–E4, the two opening quarters. Put that pair on beats 1–2 of bar 5 and repeat it on beats 3–4. In bar 6, move each note up one C-major scale step: D4–F4, again twice. You now have four two-beat units in the space previously occupied by one eight-beat idea.

Four short heads fill bars 5–6. C–E occupies beats 1–2 and returns on beats 3–4; D–F follows the same plan in bar 6. The new harmonies are vi, A minor, then ii, D minor. Every melody note in these two bars belongs to its supporting triad. Follow the bracket boundaries while you count “1–2, 3–4” in each bar. Each boundary separates one complete head from the next. The rhythmic values of C–E remain quarters even though their role changes from the beginning of a longer idea to a complete short unit.

This is fragmentation: the established units become shorter. It is a change in grouping, not necessarily a change to every note value. Our head retains its original quarter notes. The Nebraska chapter distinguishes unit size from melodic content; a continuation’s smaller units need not always quote the opening literally.

Measure two different quantities: the eight-beat span you fill and the size of each unit inside it. Fragmentation changes the latter from eight beats to two in this example. The four short groups still total eight beats. Quarter notes alone do not tell you where a unit begins or ends; the repeated heads supply that evidence. The vertical divisions on the lower strip show four separate starts within the same elapsed span as the upper strip. Read each lower box once, then join all four without extra pauses; the diagram marks grouping boundaries rather than inserted rests.

Do not replace the entire idea with unrelated fast notes just to sound busy. For your first draft, preserve its opening pair so the relationship is audible. If extracting a head is difficult, return to Motif and sequence and identify a small part before assigning it continuation function.

The head moves one scale step: C becomes D and E becomes F. This is a diatonic transfer within C major. C–E is a major third, four semitones; D–F is a minor third, three. The letter-distance pattern and rhythm remain recognizable while the exact interval quality changes to fit the scale.

Say the pairs while tapping: “C–E, C–E, D–F, D–F.” Accent your spoken labels lightly at each new pair without adding accents to the score. Then sing the notes smoothly. This separates your analytical grouping from a performance instruction: the fragments should be recognizable even when you avoid making every two-beat unit sound like a separate, heavily stressed gesture.

That small sequence gives bar 6 a direction. You do not need a long chain of transpositions. Play bars 5–6 alone, then start again at bar 1: the shorter repeated units should register as a change of behavior after the longer opening statements.

5. Increase activity while keeping the beat

Keep the same quarter-note pulse throughout. The basic idea contains six attacks across eight beats; bars 5–6 contain eight. Their half-note holds have disappeared. You hear more frequent attacks without increasing the tempo, and the short heads make those attacks feel organized.

Count attacks rather than filled noteheads: the upper row has six note beginnings and the lower has eight. Both rows last eight quarter-note beats. The increase comes from replacing held half notes with additional quarter-note events, while keeping the same beat and the two-beat head pattern established in the continuation. Compare the two rows at the same pulse: the upper row holds its third attack through beats 3–4 of each bar, while the lower row starts separate notes on beats 3 and 4. The beat stays steady as those holds become attacks.

Harmony supplies a separate source of activity. Hold I through bars 1–4; change to vi in bar 5 and ii in bar 6. In bar 7, use I6 for beats 1–2 and V7 for beats 3–4. Finish on I in bar 8. I6 means a tonic triad with E in the bass.

The opening is one sustained tonic region even if you replay its chord every bar. After that, actual harmonic changes occur at bars 5 and 6, then twice in bar 7, before the final tonic. The closing I lasts four beats: increased harmonic activity can lead into a longer arrival rather than continuing to accelerate indefinitely. Bar labels align with the chord boundaries at 5, 6, and 8. Bar 7 spans both the I6 and V7 blocks, with its midpoint marking beat 3. Read the printed durations as quarter-note beats, independent of how many melody attacks occur above them.

Harmonic rhythm describes how long harmonies last; Puget Sound’s harmonic-rhythm chapter separates it from the tune’s note values. Replaying C major does not change its identity. Here the movement away from tonic and the two-beat changes in bar 7 help direct the ending.

Check harmony and melody together in bars 5–6. A minor contains A–C–E, so C and E fit vi; D minor contains D–F–A, so D and F fit ii. The bass need not copy the tune. If you only have a melody instrument, ask someone to play the named chords, or record simple chord support before adding your line.

A continuation can keep longer units while increasing harmonic or rhythmic activity; fragmentation is the requirement of this exercise, not a test every sentence must pass. The Nebraska continuation section explains that broader possibility. You need not make every layer faster. This model’s melody slows to half notes in bar 7 while the harmony changes twice. Keep that contrast: the fragments create motion, then the closing notes give it a destination. Open Music Theory’s harmonic-functions chapter supplies context for tonic, predominant and dominant roles in common-practice harmony.

6. Supply a clear cadence

Write E4 half, D4 half in bar 7, then C4 whole in bar 8. Beneath them place E3 half, G2 half, then C3 whole as a bass outline. The final melodic D–C moves from degree 2 to 1 while the bass moves G–C, from dominant root to tonic root.

Match the two rows by beat: E4/E3 for two beats, D4/G2 for two, then C4/C3 for four. The Roman numerals specify the intended harmony; the bass and melody alone omit some chord tones. The V7-to-I arrival supports the authentic close. Listen especially to the last D–C above G–C. In the optional chord realization described below, the inner notes fill out these harmonies beneath E4, D4, and C4. Follow those top pitches as the tune, and check the bottom G2 and C3 as the roots of the closing dominant and tonic.

Keep the accompaniment below the melody. One simple ending is E3–G3–C4–E4 for two beats, G2–B2–F3–D4 for two beats, then C3–E3–G3–C4 for four beats, with the highest note carrying the tune. The figure above is the melody-and-bass outline; add these inner chord tones while preserving its outer voices. The Cadences sheet lets you compare closing chord pairs. Choose C major in its key picker for this example.

The final V7–I is an authentic cadence; Puget Sound’s cadence chapter explains the family. This is a perfect authentic cadence when V7 and I have their roots in the bass and the final C4 remains the highest sounding note. The perfect authentic cadence chapter gives those conditions. A sentence can also end with a half cadence, which pauses on V, or an imperfect authentic cadence, a less conclusive authentic ending. Our first composition uses a perfect authentic cadence.

The worksheet uses “perfect cadence” for V7–I; here “perfect authentic cadence” adds root-position bass and tonic in the highest voice.

Read the full melody without stopping at bar 4. Bars 1–2 establish the eight-beat basic idea, bars 3–4 repeat it, and bars 5–6 replace it with two-beat heads. Bars 7–8 complete the continuation through the supplied authentic cadence. The harmony labels name the intended support; this figure prints the melody rather than a full accompaniment. The long brackets name the two four-bar functions; the smaller brackets locate the units inside them. The four “2 beats” brackets occupy only bars 5–6. Continue through the unfragmented closing bars 7–8 rather than extending the head pattern past its purpose.

Test the ending in isolation before playing from the beginning. Sing D–C while another player supplies G7–C. Then keep the melody but replace G7 with C major: the harmonic approach changes even though the tune still lands on C. Restore the planned dominant and listen again. This is a practical comparison for this model, not a claim that only one chord progression can make an ending.

Play the whole sentence at a comfortable steady pulse; the handout’s reference uses quarter note = 80. Then remove the accompaniment and sing it. Finally restore the chords. Notice how the harmony makes the difference between bar 4’s C and bar 8’s C more explicit.

7. Compare with a period, then revise

A period joins an antecedent and consequent, with the second ending more strongly. In the parallel model below, bars 1–2 return at bars 5–6. Bars 3–4 lead to a half cadence on V; bars 7–8 lead to an authentic cadence on I. Open Music Theory’s period chapter explains this contrasting cadential plan.

This period uses new material: E–G–C | B–A–G begins each half. Its antecedent ends on G over V in bar 4; its consequent returns to the opening and closes on C over I in bar 8. Compare the location of repetition: at bar 5 here, at bar 3 in the sentence. The harmonic endings supply the stronger evidence. Read the first basic-idea bracket and find its matching bracket at bar 5. Between them, the contrasting idea prepares the half cadence. In the second system, the contrasting/cadential bracket leads instead to I. These endings make the repeated opening serve a different larger design.

The sentence’s second half develops forward from the repeated idea. The period’s second half returns after a cadential ending. Both can occupy eight bars and reuse material. Counting bars or spotting one repeated motif cannot decide the form on its own. Some passages fit neither model clearly. Describe the repetition, grouping, and cadence you can hear before deciding whether a formal label helps. The Nebraska chapter’s unique-forms discussion offers that broader context. Use Phrase and period to review the question-and-answer task separately.

Follow events in order in these two models. The sentence repeats before continuing; the period contrasts before its first cadence and returns afterward. Use the cadence locations together with the material, rather than treating the three bar numbers in either panel as a universal recognition rule. In both models the opening returns, but at different points in the design. Find that return and the cadences together when comparing the two complete scores.

For a quick listening check, ask a partner to play one of the two complete models without naming it. First mark the places where you hear cadential endings; then locate the opening idea when it returns. Reveal the score and compare those judgments with the harmony labels. If your first impression differs, replay the middle two bars slowly with their accompaniment rather than deciding from the melody alone.

Now inspect your own draft. If bars 5–6 simply repeat the whole basic idea again, the eight-bar length may be correct while the change to continuation remains weak. Replace those bars with your chosen head in shorter units. Keep the cadence fixed so you can hear the effect of that one revision.

The revision changes the melodic grouping while retaining the vi-to-ii plan. This also changes the melody’s fit with the chords: the upper line includes G over A minor and E and C over D minor, while the lower line uses only triad tones. To isolate grouping first, sing both versions without accompaniment; then restore the harmony and compare that additional difference. In the upper line, the held G falls on beats 3–4 of bar 5, and the E and final C occur in bar 6 over ii. Keep their durations when singing the comparison; shortening those notes would introduce another change before you restore the accompaniment.

If the cadence is weak, revise the ending before adding more fragments. Check that V7 really precedes I and that the final melodic tonic coincides with the tonic harmony. If the groups fail to sound shorter, sing only their beginnings, then restore the remaining notes. If the presentation is hard to recognize, compare the two statements directly and correct any accidental pitch or duration change. Each diagnosis points to a different edit.

For another solution, retain C–E pairs in bar 5, then use F–A pairs over IV in bar 6. Keep E–D | C and the final I6–V7–I plan. It still uses shorter heads, but takes a different harmonic route. Composition permits choices within the stated constraints.

Bar 6 transfers the two-beat head to F–A over IV. Bars 7–8 retain the original ending, letting you compare the new continuation color. IV contains F–A–C, so both fragment pitches fit its triad. The pair still lasts two beats and occurs twice in bar 6. Compare that bar with D–F over ii in the original, then sing the shared E–D–C ending.

Use Repeat, Continue, or Answer? to label supplied roles, compare continuation candidates under printed criteria, and compose a continuation after a fixed presentation. Its presentation starts E–G–C rather than our C–E–G; its two-beat head is E–G, transferred to F–A. Follow those printed notes when you switch sheets. The same formal jobs apply even though the pitch material changes.

For the A/B question, check every printed requirement before looking at the key. For your composition, play the result and check its repeated opening, shorter units, harmony, and ending.

Review one decision at a time. Recognize the opening, locate the shorter groups, then test the cadence with its harmony. Complete bars and matching pitches can be checked on paper; whether those events communicate presentation and continuation still calls for listening and musical judgment. Write the relevant bar numbers beneath your draft as you answer the three prompts. A change of pitch material can preserve the same formal jobs when its grouping and harmony support them.

Return to your saved two-bar idea. In bar 5 repeat your opening pair twice over A minor; in bar 6 move each note up one C-major scale step, giving D–F or F–D over D minor. Keep the printed bars 7–8. Once this works, change the harmony and melody together. Sing the result before adding accompaniment detail. A Tissimo teacher can help you hear whether the units shorten clearly and whether the harmony supports the ending you intended.

Free worksheets for this lesson

• An Idea, Its Repeat, and a Push to the End — the original sentence, its role map, and a period comparison.
• Repeat, Continue, or Answer? — identify functions, select a continuation, and compose with a scaffold.
• Phrase and period — antecedent and consequent, with parallel and contrasting comparisons.
• Motif and sequence — recognize, repeat, move, and change a short idea.
• Cadences in Every Key — closing chord pairs; select C major to match this lesson.

Sources

• The sentence — Open Music Theory
• The Phrase, Archetypes, and Unique Forms — University of Nebraska, Open Music Theory
• The Sentence — University of Puget Sound
• Harmonic Rhythm — University of Puget Sound
• Harmonic functions — Open Music Theory
• Cadences — University of Puget Sound
• The period — Open Music Theory
• The Perfect Authentic Cadence — University of Puget Sound