Two-Mallet Marimba Rolls: How to Keep a Long Note Alive

Why a Marimba Bar Needs Help

Strike a marimba bar once and listen. The sound begins the moment the mallet contacts the bar, rises briefly, then fades — usually within a second or two. That is physics. A marimba bar is a free-floating resonating strip of wood; once the mallet leaves it, nothing keeps it moving. If you play a whole note with a single stroke, the bar is nearly silent by beats two or three, and completely gone by beat four. The written duration tells your audience what they should hear; the instrument tells you it cannot deliver that on its own.

This is the gap the roll fills. A marimba roll is not a different note value or a different rhythm — it is a technique that lets you keep a pitch alive for as long as the written note lasts. You alternate right and left mallets on the same bar in a continuous stream of single strokes, each one renewing the sound before the previous stroke has fully decayed. The result is an approximation of sustained tone: not identical to a piano sustain pedal or a bowed cello, but close enough that the listener hears a continuous pitch rather than a series of short pings.

The Percussive Arts Society describes this directly in their discussion of marimba sustain: the roll creates the illusion of sustain through repeated single strokes, and the success of that illusion depends on matching your stroke activity to the written note value. Play too few strokes and the sound gaps. Strike past the end of the note and you overstep the written duration. The window — the span of beats when you are allowed to be active — is set by notation, not by feel.

Left: one strike on C5 — the bar rings and decays. Right: the same pitch with three slashes on the stem, meaning roll. Alternate right and left mallets through the full half-note duration.

Before you can practice the roll, you need to read it correctly. The next section covers exactly what those three slashes mean and what they do not mean.

Reading Roll Notation: Three Slashes, One Rule

Open any intermediate marimba method and you will see notes with extra beams drawn through the stem. Three slashes on the stem of a half note or a whole note: this is the standard notation for an unmeasured roll on keyboard percussion in North American practice. "Unmeasured" means that the slashes do not indicate a specific rhythmic value — they do not mean play thirty-second notes, or sixteenth notes, or any fixed subdivision. They mean: alternate your two mallets continuously within the duration of the written note.

The note head and value do the only work that matters. A half note with three slashes lasts two beats in 4/4 — the same as any other half note. A whole note with three slashes lasts four beats. The slashes tell you how (keep alternating), and the note value tells you for how long (until the note ends or a rest begins). Those two pieces of information are separate, and keeping them separate is the first conceptual step in reading rolls correctly.

One thing the three slashes do not tell you is how many strokes to play. That number depends on the tempo, the register of the bar, the dynamic, and what your teacher has established for your current level. General early-intermediate percussion guidance frames the roll as a listening goal: match the sound your ear hears in the music, not a fixed stroke formula. This article will say it plainly: there is no single correct number of strokes for a roll. Your teacher will guide you to a density that sustains the pitch on your instrument.

The written value sets the sounding window. A half note with three slashes means roll for two beats, then stop when the rest begins. A whole note means roll for all four beats.

Three slashes on the stem mark an unmeasured roll. The note value sets the duration; the slashes tell you to alternate. These are two separate instructions.

The whole note worksheet at Tissimo covers the basic duration before you add a roll to it. If the idea that a whole note lasts four beats is still shaky, review that first — a roll does not change what the note value means, it only changes how you produce it.

Half note: two active beats, two rest beats. Whole note: four active beats, no rest. The notation is the same except for the note value — but the window it creates is different.

Step One: Counted Single Strokes on One Bar

Before you roll, you count. This is not optional — it is the method that makes the roll legible and then controllable.

Take two mallets and hold them in your standard two-mallet grip. Find C5 (the C just above middle C on the marimba, the third-space note in the treble clef). Now set a slow tempo: quarter note equals 60 on a metronome. Play a single sixteenth-note stroke with your right mallet. Then a sixteenth-note stroke with your left. Then right. Then left. Keep the strokes even, keep the tempo steady, and count: "one e and a, two e and a." You are not rolling yet — you are building the muscle memory that makes a roll possible.

Counted preparation: eight alternating sixteenth strokes on C5. Play each notehead with the labeled mallet — R then L then R, never two of the same in a row.

The rule is absolute: right and left alternate on every stroke. Never two right in a row. Never two left in a row. Whenever this rule breaks — a doubled stroke — the roll becomes uneven and the sound stutters. The sixteenth notes worksheet is a useful reference here: it covers the subdivision you are using for counted preparation and gives you notation practice alongside the technique.

Right (R) and left (L) mallets alternate on every stroke. The pattern continues across bar lines and across pitch changes.

Practice the counted preparation until eight strokes at quarter=60 feel automatic. Then twelve strokes. Then sixteen. You are building the motion that will become the roll. Once the alternation is steady and even, you are ready to learn where it starts and where it stops.

The Onset and the Stop: Staying Inside the Note

A roll has two hard edges: it begins on the written onset of the note, and it ends no later than the written end of that note or the beginning of any rest.

Both edges are exact. The written note onset is not "around beat one" or "just before beat one" — it is on beat one. Your first stroke lands when the beat lands, not a fraction early and not a fraction late. Similarly, the roll does not taper off gradually as the note approaches its end: you stop actively striking when the rest begins. If the rest starts on beat 3, your last stroke is before beat 3. The bar may continue to ring slightly after your last stroke — that is natural resonance and is not a mistake — but no new stroke falls in the rest.

The roll begins on beat 1 of bar 1 — the onset of the whole note. In bar 2 there are two beats of rest, then a new onset on beat 3. No stroke during the rest.

The rests worksheet at Tissimo makes this concrete: a rest is not a quiet moment, it is a specific number of beats where no sound is produced. In rolling, this means no stroke — not a quiet stroke, not a softer stroke. Zero strokes.

Beat map for the four-bar study. Teal cells are active roll beats (C5); bar 2's active beats are pink to flag the D5 change; cream cells are rest (no strokes). Bars 1 and 2 have two active beats each; bar 3 has four; bar 4 is silent.

Look at the beat map above. The four bars of the study have a clear structure: half-note windows in bars 1 and 2 (two active beats each), a whole-note window in bar 3 (four active beats), and a full rest in bar 4. Reading that map before you play is a concrete way to understand the roll as a window of activity, not a continuous stream that runs through everything.

A roll does not override rests. The written note value is the permission slip for your stroke activity. When the note ends, the permission ends.

The Handout 451 worksheet — "One Written Note, Many Single Strokes" — walks through exactly this structure: the notation key, counted preparation on C5, and the full four-bar study. Use it alongside this article as your written reference.

The four-bar study. Roll through each note's full written duration, then stop cleanly at the rest. Bar 4 is a full measure of rest — no strokes.

Density, Register, and Your Teacher's Guidance

Up to this point, this article has deliberately avoided stating how many strokes to play in a roll. That avoidance is intentional, because the answer genuinely depends on factors this article cannot know: your instrument, your technique stage, the register of the bar, the dynamic marking, and what your teacher is working on with you.

Here is what the instrument tells you. Lower bars on the marimba are longer, wider, and heavier. They vibrate more slowly and their sound decays more slowly after a single strike. A C4 half-note roll at moderate tempo can sustain with a lower stroke density than a C6 half-note roll at the same tempo, because the lower bar keeps ringing longer between strokes. Higher bars decay faster: their shorter sustain means a more frequent stroke rate is needed to maintain the illusion of continuity.

Lower bars decay more slowly; higher bars decay faster. Three slashes mean the same in both registers, but your teacher will recommend a stroke density suited to each register of your instrument.

The PAS article "Sleight of Hand: The Illusion of Sustain on Marimba" frames this clearly: the roll speed is not a single fixed value but a listening decision, adjusted to match the decay characteristics of the bar and the register you are playing in. This is a teacher-guided skill, not something to guess at by yourself.

What this means practically is that your job in early roll work is not to find the "right" speed — it is to master the onset, the stop, and the alternation. Once those are reliable, your teacher can work with you on density. A roll that starts on time, stops at the rest, and alternates correctly is a good roll at the early-intermediate stage, even if the stroke rate still needs refinement.

Moving to a Second Rolled Pitch

Once you can sustain C5 through a half note and through a whole note, you are ready to move the roll to a new pitch. This is a coordination task with a specific moment: the pitched change must happen in the rest, not during an active roll.

Look at the excerpt below. Bar 1 has a C5 half-note roll and a half rest. Bar 2 has a D5 whole-note roll.

Stop the C5 roll on beat 3 when the rest begins. Use beats 3 and 4 to move to D5. Begin the D5 roll cleanly on beat 1 of bar 2.

The sequence is three steps. In bar 1, you roll through beats 1 and 2 on C5. The moment beat 3 arrives, you stop all strokes — the rest begins. During beats 3 and 4 of bar 1, you move both mallets to D5 (one step to the right, in the same row). On beat 1 of bar 2, you begin the D5 roll cleanly, starting with whichever mallet is ready.

Two things are worth noting here. First, you do not need to land on D5 before beat 3 — the rest gives you two full beats of preparation time. Second, the alternation does not restart from scratch at the new pitch: you simply continue the R-L pattern from wherever it is when the new note begins. If your last C5 stroke was a right mallet, your first D5 stroke will be a left, then right, then left. The alternation is continuous.

Evaluating Your Roll: Four Questions

When your teacher listens to your roll work, they are not counting your strokes. They are listening for four things, and these four things are exactly what you should check yourself after every practice attempt.

Did the roll start on the written beat? If your first stroke landed late, the pitch was missing at the note onset. A listener hears a short silence at the start of the note, even if the rest of the roll was good.

Did the roll stop before or at the rest? If strokes continued into the rest, you overstated the duration. This is a more common mistake than starting late, because the physical momentum of alternating strokes tends to carry you past the stopping point.

Did the hands alternate without doubling? A doubled stroke — two right or two left in a row — creates an uneven sound: one gap followed by two closely spaced strikes. Your ear will usually catch this as a bump or stutter in the roll.

Did the sound stay continuous through the note? Gaps in the sound mean strokes were too infrequent or the timing was uneven. If the pitch clearly drops out in the middle of the roll, the density was not sufficient for that bar and register.

Use these four questions to check each roll attempt. A 'no' on any line tells you exactly what to work on next.

Notice what is not on this list: the exact number of strokes. A whole-note roll with eight strokes and one with twelve strokes can both be good rolls if the sound is continuous and the timing is accurate. The stroke count is a means to an end, not the end itself.

Every two-mallet roll follows these three steps. The written duration is the only clock.

The Exercise 151 worksheet — "Keep the Roll Inside the Note" — gives you structured practice on exactly these four questions. It has window cards that mark the active beats, counted strips for the alternation, and two-bar studies that combine the half-note and whole-note windows. The answer key assesses onset, duration, and continuity — not a fixed stroke count.

A Practice Routine You Can Start Today

The five-step routine below builds the roll from first principles. Work through the steps in order; do not skip to step 3 or 4 until the earlier steps are reliable.

Work through the five steps in order. Only move to the next step when the current one sounds continuous and even.

Step 1: Count in. Before any stroke, count one full bar aloud at your tempo: "1 – 2 – 3 – 4." This is not optional. A roll that starts without a count-in is a roll that starts at an approximate beat, not a precise one.

Step 2: Counted single strokes. Play eight alternating sixteenth strokes on C5. Say the R and L labels aloud as you play. Check for any doubling. Repeat until the alternation is automatic.

Step 3: Half-note roll. Roll through beats 1 and 2 of a 4/4 bar on C5. Count beats 3 and 4 aloud as a rest — no strokes. Repeat four times, then check the four questions.

Step 4: Whole-note roll. Roll through all four beats on C5. Rest for the full next bar. Check whether the sound was continuous from beat 1 to beat 4 — not just at the start and end.

Step 5: Pitch change. Play the two-bar pattern from Moving to a Second Rolled Pitch: C5 half roll + rest in bar 1, D5 whole roll in bar 2. Focus on clean starts and stops more than stroke density.

Free Worksheets for This Lesson

These free printable sheets go with what you just read. Download them and bring them to your next lesson.

• One Written Note, Many Single Strokes — notation key, counted preparation figure, and the four-bar study. Handout 451 for your teacher's records.
• Keep the Roll Inside the Note — window cards, counted strips, and two-bar studies. Exercise 151; the answer key is flipped so you can check yourself.
• Whole note — the basic four-beat duration, without a roll, for review.
• Sixteenth notes — the subdivision used in counted preparation.
• Rests — the stop-at-rest rule applies directly to every roll you play.

Handout 451 — One Written Note, Many Single Strokes: notation key, counted preparation, and the four-bar study. Free download at Tissimo.

Exercise 151 — Keep the Roll Inside the Note: window cards, counted strips, and two-bar studies. Free download at Tissimo.

If you want a teacher who can watch your roll in real time — checking the onset, the stop, and the alternation as you play — a Tissimo instructor can do exactly that in a live one-on-one session. The things this article describes are straightforward to hear but harder to self-correct without a trained ear in the room.

Sources

• Sleight of Hand: The Illusion of Sustain on Marimba — Percussive Arts Society
• A Common Approach: Percussion — Music Mark
• Percussionist journal archive — Percussive Arts Society
• Stone, G. L. — Stick Control (George B. Stone & Son, 1935)
• Whaley, Garwood — Musical Studies for the Intermediate Mallet Player (Meredith Music, 1974)
• Dean, Matt — The Drum: A History (Scarecrow Press, 2012)