Pedal Harp: How One Pedal Changes a Letter Across Octaves

Set the F pedal to sharp on a double-action pedal harp, and the middle-register F strings change together: F4 becomes F♯4 and F5 becomes F♯5. You cannot keep one of those two F strings natural while making the other sharp under that same setting. That connection across octaves is the reading skill to learn here.

You will predict pitches, follow one change through a short score, and check whether two specified strings can supply a simultaneous pair. You can do the written work without an instrument. If you play, have your harp teacher confirm the instrument and a comfortable setup first; physical pedal technique belongs in that lesson.

1. Confirm the instrument and the register

This guide concerns a double-action pedal harp. The American Harp Society distinguishes pedal, lever, and fixed diatonic harps: a pedal harp has seven pedals, while a lever harp changes pitches with individual hand-operated levers. Confirm which instrument you have before applying a pedal rule to its strings.

We will use C4 through C5, plus F5 for an octave comparison. Here C4 means middle C, following scientific pitch notation. F4 is the F above middle C; F5 is an octave above F4. The number identifies the register, so write it whenever two F strings appear in a question.

Read C4–F4–C5–F5. The two Fs occupy different octaves; F5 is the upper exception to this lesson’s C4–C5 range.

These examples use pedal-controlled strings. Some extreme strings lack pedal action: Einarsdóttir’s mechanism guide identifies the bottom C and D strings of the concert harp and, on some harps, the top G string as exceptions. Do not extend our middle-register predictions to every string on every instrument. Your teacher can identify the exceptions on your harp.

Open One Pedal, One Letter: Harp Pitch States beside this article. Its first comparison gives the same F letter in two octaves. Start by naming the strings rather than trying to copy a foot movement.

Before going further, point to the four notes in the register figure and name each one without its caption. Middle C has its own ledger line below the treble staff; the F immediately above it sits in the bottom space. The higher F sits on the top line. Keeping those two F locations clear will help you notice the central fact: the written positions are an octave apart, yet their pedal state is shared. You are comparing two strings, not following one string as it somehow moves into a different octave.

2. Separate the string, the state, and the output

Use three pieces of information for each prediction. String identity names the selected letter and register, such as the F4 string. Pedal state says flat, natural, or sharp for that letter. Available output combines them: the F4 string with F set to sharp produces F♯4. The score’s target is the pitch you need. Check whether the selected string’s available output matches that target.

String, state, and available output answer three different questions. Changing the F state changes the output without changing the string’s letter identity.

A score gives pitches to produce; your state record tracks whether the assigned strings are ready to produce them. A written F♯ is therefore a target to check against the current F setting. It does not mean “make the F pedal sharp again” each time that note appears. If F is already sharp, the required state is already present.

Spelling matters even when two outputs sound alike. In equal temperament, F♭4 has the same pitch as E4. Nevertheless, selecting the F4 string in its flat state is a different assignment from selecting the E4 string in its natural state. The University of Puget Sound’s enharmonic lesson explains how equal pitches can have different written names.

F♭4 and E4 have equal pitches in equal temperament. Their different letters still identify different strings in this lesson.

For the exercises below, retain the supplied string identities. If a card says “F4 string,” answer F♭4 when F is flat, even though E4 names an equal pitch. We are learning the letter-to-pedal relationship; alternative-string performance choices are a later topic. This habit also prevents an apparently clever respelling from concealing a conflicting state demand.

Try predicting in both directions. Given “F4 string; F sharp,” supply F♯4. Given “F♭4 target on the F4 string,” supply the flat state. Given “F natural,” you still need a register or a named string before you can give one exact sounding note: F4 and F5 are both consistent with that state. These reverse questions expose missing information. A correct letter without an octave may be enough for a state lookup, but it is incomplete when the task asks for the exact pitch of a particular string.

3. Read top, middle, and bottom

Each pedal has three states. Top is flat, middle is natural, bottom is sharp. Moving from one level to the next lower level raises the controlled strings by one semitone, or half step. Thus flat to natural raises one half step; natural to sharp raises another. Flat to sharp spans two half steps in total.

The pedal operates a linked mechanism at the strings. In the flat position, the discs leave the strings at their full vibrating length. The natural position engages one disc on each controlled string, shortening its vibrating length; the sharp position engages a second. Shortening the vibrating length raises the pitch. The two stages of shortening are the double action. The mechanism guide shows these two stages.

Schematic levels of the F pedal: downward through flat, natural, and sharp, the pitch rises one semitone at each step. This is a state map, not a foot-placement drawing.

Say “F flat, F natural, F sharp” while reading the next figure. All three notes occupy the same F position on the staff. Their accidentals change the pitch. The accidental definitions from Puget Sound and Tissimo’s sharp, flat, and natural sheets review those symbols.

Three separate F4 targets: flat, natural, sharp. The staff position and letter stay F throughout; the selected pitch rises by one semitone between neighboring states.

Do not equate “down” with a lower sound. Here the level and sounding pitch move in opposite directions. If the interval is unclear, use Half steps & whole steps to count adjacent piano keys as a pitch reference. Count black and white keys equally; F♭4 sounds at E4 on an equal-tempered piano, so F♭4–F4 corresponds to the adjacent white keys E–F: one half step.

Our C-to-B letter lookup below records seven letter states. Read its explicit labels rather than treating it as a drawing of the base of a harp.

Read the levels backward as a second check. From sharp back to natural, the selected pitch falls one half step; from natural back to flat, it falls another. Natural is a named middle state, not a command that always raises or always lowers. Its direction depends on the starting state. This is why a useful state card includes both “before” and “after.” If someone writes only “change F,” ask them to complete the written instruction with the required destination before deciding what pitches should follow.

4. Change F across octaves; leave other letters alone

Start with all seven letter states natural. Change only F to sharp. In your record, C, D, E, G, A, and B remain natural. This is a single update to F, with consequences wherever its controlled strings occur. Gotham and Gunn’s pedal-harp study describes the seven pedals as controlling sets of octave-related strings.

Lookup table, not the physical foot layout. Compare the two rows: only F changes, while the other six entries stay natural.

Predict the pair before looking at the sharp signs: the F4 string now gives F♯4; the F5 string gives F♯5. Both outputs rise one semitone. The octave relationship remains. A prediction that changes only the lower F has treated the pedal as though it belonged to one register, which is the mistake this comparison exposes.

Both Fs rise: F4–F5 becomes F♯4–F♯5. The same state applies to both specified F strings.

Now test an unchanged letter as carefully as a changed one. Read the sequence of assigned strings F4–A4–C5–A4, then predict its sounding pitches with F sharp. The result is F♯4–A4–C5–A4. A4 and C5 stay natural because neither the A state nor the C state changed. A pedal change is not an instruction to transpose the whole phrase.

Compare the same four string positions before and after the F update: F4 becomes F♯4, while A4–C5–A4 stays unchanged.

Cover the “After” row of the letter-state handout and reconstruct it. Then answer its Try it: F4 and F5 become F♯4 and F♯5; A4 stays unchanged. Explain why before checking the printed answer. You should be able to point to the changed letter and the six entries you preserved.

You can also check the comparison without sound. Underline every F output in the two string sequences and compare those positions first. Then circle each A and C and compare them separately. There should be one altered output in this particular two-bar figure and three unchanged outputs. In the octave-pair figure, by contrast, both outputs change. The number of changed notes depends on how many F strings the example actually uses; it is not the number of pedals updated. One pedal update can affect several notes in a score.

5. Follow a state through four bars

The original model below begins all natural, in 4/4 at quarter note = 60. Read it on paper first. Bar 1 contains F4, A4, F5, A4 in quarter notes. Bar 2 is a whole rest labeled “F to sharp”; the other six letter states remain natural. Bar 3 repeats the string sequence with its two F targets sharpened.

The F targets change in both octaves after the whole-rest bar. Bar 4 contains C5 and a half rest; F remains sharp even though no F sounds there.

Count four beats in every bar, including the whole rest. Bar 4’s half-note C5 uses two beats and its half rest uses two more. The rest is an illustrative planning interval, not a promise that a particular student can execute the change at that tempo. Your teacher decides physical readiness and tempo.

Trace the F setting separately from the note attacks. It begins natural, changes in bar 2, and stays sharp through bars 3 and 4. The lack of an F note in bar 4 gives you no reason to erase the setting. If the next bar used the F4 string without another change, its available output would still be F♯4.

The state record continues through rests and through bars containing other letters. A silent F string does not acquire a new setting by itself.

In ordinary modern staff notation, an accidental applies to its staff position for the rest of the measure unless another accidental changes it; it does not automatically change the same letter in another octave. The F pedal, however, changes both controlled F strings. That is why bar 3 prints a sharp at F4 and another at F5 even though your state record contains only one F-pedal update. The MuseScore handbook’s accidental rule describes this written scope.

This is where ordinary accidental reading and instrument state must remain distinct. A barline does not physically reset a pedal. Our scores keep the key signature neutral and print explicit accidentals and state labels. If written targets later require F natural, your plan must account for that requirement; waiting for a barline cannot make the string natural.

Top system: F stays sharp through the non-F bar. Bottom system: a whole-rest bar labeled F to natural precedes F♮4 and F♮5; both strings return together, while A4 and C5 stay unchanged.

Now imagine a whole-rest bar labeled “F to natural,” followed by F4 and F5 as half notes. Both F strings return to natural together; A and C keep their previous states. The natural signs show the requested pitches, and your written plan supplies the corresponding state change during the rest. The lower system above shows this continuation.

The handout’s model includes synthetic piano playback for checking pitch and rhythm. Listen for the full rest and the changed Fs. This reference does not reproduce harp resonance, mechanical sounds, or physical pedal skill. A real ringing string may change pitch during a pedal change; managing that sound belongs with your teacher rather than being inferred from this playback.

6. Detect conflicting demands on the same letter

Fix the string identities before deciding whether a pair works. Suppose the two strings are F4 and F5, sounded simultaneously under one setting. F4 plus F5 is compatible with F natural. F♯4 plus F♯5 is compatible with F sharp. Each pair asks the shared F pedal for one consistent state.

Two compatible cases, considered separately: natural Fs share F natural; sharp Fs share F sharp. There is no instruction to change between these chords in time.

Now request F4 plus F♯5 on those same two F strings. The lower target asks for F natural; the upper asks for F sharp. One F setting cannot satisfy both demands simultaneously. F♭4 plus F5 fails the same test: flat below and natural above conflict. Different octaves do not provide independent F controls.

These are diagnostic target drawings, not playable assignments to the specified F strings under one setting. Each chord demands two different F states at once.

Keep the conclusion precise: these specified F strings cannot supply that pair under one setting. This does not establish that the two sounding pitches are globally impossible on a harp. Another letter can sometimes supply an enharmonically equal pitch, but that changes the string assignment. We are not teaching those workarounds here. A composition student should flag the assignment for a harpist rather than silently replacing a string name.

For each pair assigned to the F4 and F5 strings, compare the requested F states. Both requests must agree under one setting.

Try the four pair cards in Check the Letter Before the Pedal. Write the shared state for each yes answer. For a no answer, name both incompatible demands. “Natural and sharp F at once” demonstrates the reasoning more clearly than “too difficult,” because this question concerns a state conflict rather than playing speed.

A useful written justification has two parts. First identify the requirement for each specified string: “lower F natural; upper F sharp.” Then compare the requirements: “both belong to F, but the states differ.” You do not need to estimate a pedal-change time, because the question fixes one simultaneous setting. If the targets occurred at separate moments, you would instead need a state-change plan between them. Keep those questions separate when marking a score: a simultaneous conflict and a sequential change ask you to solve different problems.

7. Make a before-and-after card, then check it

Write all seven starting states before planning a short example. Next identify the changed letter, its before and after states, and the bar reserved for the change. Finally name one affected output and one unchanged output. This is a compact written check you can bring to a lesson.

Use a second letter to see whether the rule transfers. Reset to all natural. Read B4 and A4 as half notes, a whole-rest planning bar, then B♭4 and A4 as half notes. The single update is B natural to B flat. B4 lowers one semitone; A4 remains natural. F stays natural because this new example explicitly resets the starting states.

Reset before this example. Change only B during the planning bar; the repeated A4 is your unchanged-letter check.

The exercise sheet begins with six independent output cards, each labeled “Reset to all-natural.” Do not carry one card’s setting into the next. Its later routes use F natural to sharp and B natural to flat, with a reset for each route. Finish the written predictions before using the upside-down key or synthetic piano checks.

A completed card for the four-bar model: starting states, one update in bar 2, and changed and unchanged outputs.

Try two independent predictions before checking the answers. First, start all natural and set E to flat: what does the E4 string produce, and does F4 change? Second, start all natural again and set G to sharp: what do the G4 and A4 strings produce? Answers: E♭4 with F4 unchanged; then G♯4 with A4 unchanged. The second question starts fresh, so E is natural again.

For a final check, put the handout away and write a fresh card from memory: all letters natural, F changes to sharp, then C5 sounds. Name the current outputs of the F4, F5, A4, and C5 strings. The answers are F♯4, F♯5, A4, and C5. Now explicitly reset to all natural and answer again: F4, F5, A4, C5. The reset changes the stored F state; the C5 note alone did not. Bring any uncertainty about that distinction to your next lesson along with the completed card.

If you miss an answer, locate the error: wrong letter, wrong state, wrong octave, or a setting carried past an explicit reset. Correct that one decision and explain it aloud. A Tissimo teacher can review your pitch predictions and score plan in a live lesson, then relate the written states to your instrument and current technique.

Free worksheets for this lesson

• One Pedal, One Letter: Harp Pitch States — F octave pairs, a seven-letter lookup, and the four-bar model.
• Check the Letter Before the Pedal — six output cards, four pair checks, and two state-change routes.
• The sharp: one half step up — review the sharp symbol and pitch direction.
• The flat: one half step down — review the flat symbol and pitch direction.
• The natural: back to plain — compare canceling a sharp with canceling a flat.
• Half steps & whole steps — count pitch distances using adjacent keys.

Sources

• Getting Started — American Harp Society
• Pedal mechanism — Gunnhildur Einarsdóttir, Harp Notation
• Accidentals — MuseScore 3 Handbook
• Pitch Properties of the Pedal Harp — Gotham and Gunn, Music Theory Online
• Octave Registers — University of Puget Sound
• Accidentals — University of Puget Sound
• Enharmonic Notes — University of Puget Sound
• Pedal slide — Gunnhildur Einarsdóttir, Harp Notation