To replace two dotted eighth notes with a duplet without changing measure duration, rebuild their combined dotted-quarter span as a two-note tuplet, then restore the pitches. The current handbook documents tuplet creation, but no command that automatically wraps existing dotted notes.

This guide covers an ordinary Mac editing task: rewriting equal dotted-note pairs in an existing passage, especially in compound meter such as 6/8. The current handbook covers MuseScore Studio 4.0 and later; older MuseScore versions have separate documentation. About the handbook.

Which dotted notes can become a duplet without changing the rhythm?

Start with the combined duration of the two notes. For the worked example, assume a regular 6/8 measure begins with two dotted eighth notes, C followed by D. Each occupies three sixteenth-note units, so together they occupy six sixteenths: one dotted quarter. These are illustrative pitches and durations, not a reported score or test result.

The equivalent replacement is two eighth notes under a 2:3 duplet: two eighth-note values occupying the time normally taken by three eighths. Each therefore lasts half a dotted quarter, exactly the duration of the original dotted eighth. The handbook defines tuplets as divisions of a chosen duration into equal units. Tuplets.

Use the following duration ledger to plan the replacement. All figures are expressed in ordinary sixteenth-note units; the duplet changes the written values while preserving the elapsed musical time.

Checkpoint Original dotted-note pair Replacement eighth-note duplet
First note begins 0 0
First note lasts 3 units 3 units
Second note begins 3 3
Second note lasts 3 units 3 units
Following music begins 6 6

This gives you a stronger check than counting the notes or looking for a bracket. Both note onsets and the endpoint must match. In the example, the second half of the 6/8 measure still begins after six sixteenth-note units, and the whole measure still occupies twelve.

The same reasoning applies at other scales: two dotted sixteenths total a dotted eighth, and two dotted quarters total a dotted half. Calculate the span before choosing the tuplet's starting duration. A single dotted note does not establish which two-note group you intend.

An unequal pair needs a different plan. A dotted eighth followed by a sixteenth has durations of three units and one unit. Replacing it with two equal notes across those four units would move the second onset from unit three to unit two. The total could remain unchanged while the rhythm changes. Use this workflow only when the equal subdivision matches the original passage.

Why selecting the existing notes is not a documented conversion method

MuseScore's documented tuplet workflow begins at a note or rest, sets the duration of the entire group, and divides that duration. The handbook does not describe a selection command that preserves an existing dotted-note sequence and encloses it in a new duplet. Treat this as rebuilding a short rhythmic span, with pitches and markings checked afterward. Creating tuplets.

The documented Tools → Regroup rhythms command addresses conventional rhythmic spelling, including beat grouping and ties, while retaining the rhythm. Its documentation does not identify it as a dotted-note-to-duplet converter. It therefore provides no documented shortcut for this task. Regroup rhythms.

Rebuild one dotted-eighth pair on your Mac

Before editing, keep a reference copy of the original passage. Record both pitches, octaves, accidentals, chord tones and attached markings. Start with one pair so you can compare the result before extending the method.

1. Establish the starting point and voice

Press Esc to leave note input, then select the first dotted eighth. If the staff contains multiple voices, confirm that you selected the intended line. Entering note input from a selected note or rest uses that element's voice; the cursor color also identifies the active voice. Working with multiple voices.

Press N to enter the default Input by note name mode. Check that the cursor is at the first note of the pair. This matters because note entry replaces music at the cursor location. Entering notes and rests.

2. Set the duration of the whole replacement group

Choose a dotted-quarter duration in the toolbar: quarter note plus one augmentation dot. The Mac shortcuts are 5 for quarter-note duration and . to toggle the dot; inspect the toolbar so that exactly one dot is active. These controls set the whole span to divide, before you enter replacement pitches. All keyboard shortcuts.

Press Cmd+2 to create the duplet. Alternatively, choose the duplet option under Add → Tuplets. The intended result is a two-note group occupying the dotted-quarter span. The documented sequence is to choose the total duration first, then the number of divisions. Tuplets, Mac tuplet shortcuts.

3. Restore both pitches and inspect the endpoint

Fill the two duplet positions with the original pitches, in order. For the synthetic example, enter C, then D, checking their octaves. Letter-name entry replaces existing notes or rests, and MuseScore chooses the octave nearest the preceding note. Use Cmd+Up or Cmd+Down if an entered note needs an octave correction, then press Esc when finished. Entering notes and rests.

Compare the rebuilt pair with the reference. Confirm two undotted eighth-note values inside the duplet, the original pitch sequence, and the unchanged starting position of the following music. Inspect ties, articulations and other attached markings individually; this rebuild procedure does not establish that they have all survived.

If the result is wrong, use Cmd+Z to undo the affected operations and reassess the starting location and total duration. Avoid clearing the passage with Tools → Remove selected range: that command removes the selected music and its associated time. Ordinary deletion replaces notes with rests instead. Entering notes and rests, Editing notes and rests.

Preserve written pitch, sounding pitch and linked parts

Keep the pitch display consistent while comparing and re-entering notes. MuseScore distinguishes written pitch from concert, or sounding, pitch; the Concert pitch checkbox in the status bar changes the score's displayed pitch convention. For a transposing instrument, copying a displayed note name from one convention into the other can produce the wrong replacement pitch. Transposition.

For this rhythm-only task, retain the instrument's existing transposition settings. Compare the original and replacement with the same Concert pitch setting, then listen to the passage as an additional check. There is no reason to run Tools → Transpose... merely to change dotted notation into a duplet; transposition raises or lowers pitches. Transposition.

Editing an instrument part also changes shared musical content. The handbook states that adding or deleting items and changing note pitches or durations are reflected between the score and parts in both directions. Consequently, rebuilding the pair in a part can affect its corresponding staff in the full score. Parts.

Appearance has separate synchronization behavior. The handbook identifies these controls as new or considerably enhanced in version 4.2: property changes made in a part can become independent of the score, while score-side changes propagate unless the corresponding item is already desynchronized. Open the relevant part through Parts → Open selected and inspect its tuplet presentation after the musical edit. Parts.

Diagnose a result that looks or sounds wrong

Symptom What to check
The pair finishes too early Was the entire starting span a dotted quarter rather than an undotted quarter?
The second note starts at a different time Was the original pair actually equal in duration?
An unexpected pitch or chord appears Compare both entered positions with the reference, including octaves and chord tones.
Another line was changed Confirm the selected voice and its cursor color.
The score and part show different brackets Inspect their appearance and synchronization settings.

A missing bracket alone does not prove that the duration is wrong. Select the tuplet marking and inspect Number type and Bracket type in the Properties panel. The number can display the divisions or the explicit ratio, and bracket visibility can be automatic or explicitly controlled. Tuplet properties.

Finish each replacement by checking three things: the first onset, the second onset and the endpoint. Once those match the original duration ledger, verify pitches and attached markings in both score and relevant parts. Working one complete group at a time makes the conversion traceable and keeps the unchanged measure duration easy to confirm.

Sources