How to transpose a song and change its key in the piano roll

By Tongkit Leong · October 21, 2026 · 6 min read

To transpose a song, move every pitched note up or down by the same number of semitones so the melody keeps its shape in a new key. In the Tracks browser studio you do that by selecting notes in the piano roll and shifting them together, leaving drum tracks untouched.

Why change the key?

The most common reason is the singer. A melody that sits a little too high strains the voice, and one that sits too low loses energy. Moving the whole song two or three semitones can fix it without rewriting anything.

Other reasons: matching a sample or a loop that is stuck in one key, making two sections of a song fit together, or lifting the final chorus for a fresh feel.

What transposing actually does

A semitone is one key on a piano, black or white. Shifting every note up two semitones moves C to D, E to F#, and so on. Because every note moves the same distance, the intervals between them stay the same, so the tune still sounds like itself, just higher or lower.

The key changes by the amount you move it. Up two semitones takes a song in C major to D major. Down three takes it from C major to A major.

Step 1: Work out how far to move

Count semitones from the old key to the new one. C to E is four. G to A is two. If you are fitting a voice, do not calculate: shift by one or two semitones, sing along, and keep going until the hardest line feels comfortable.

Step 2: Select the notes

Open the clip in the piano roll and select all the notes in it. Do this for every pitched track: melody, chords, bass, pads, arpeggios. If you miss one, it will clash with the rest, and you will hear it right away.

Step 3: Shift them together

Drag the selected notes up or down the same number of rows. The vertical rows in the piano roll are semitones, so two rows is two semitones. Keep the notes in their original time positions by moving only vertically. Play the clip back after each move.

Do the same on each clip. If a track has many clips, check that each one lands on the right rows, since a one-semitone slip sounds sour.

Step 4: Leave the drums alone

On a drum track, each row is a different drum sound, such as kick, snare or hat. Moving those notes swaps one drum for another, which breaks the beat. Transpose melodic and bass parts only. For more on how drum rows work, see the free online drum machine guide.

Step 5: Handle recordings and samples

MIDI is easy because the notes are data. Recorded audio is different: a vocal or a sampled loop is a sound wave, and moving it in pitch means repitching it. Read time-stretch and repitch in the browser for how that works and where it starts to sound artificial. As a rule, small shifts of a few semitones stay natural and big ones do not.

If you are keeping a vocal in its original key, it is often easier to transpose the instruments to match than to repitch the voice.

Step 6: Listen and fix the register

After transposing, listen for parts that now sit in the wrong place. A bassline moved up several semitones can turn thin, and one moved down can turn muddy. Drop or raise a part by an octave (twelve semitones) to put it back in a comfortable range. An octave jump keeps the same note names, so it does not change the key.

Common mistakes

• Moving only some tracks: every pitched part must shift by the same amount.
• Transposing drums: this swaps drum sounds instead of changing pitch.
• Moving notes sideways: drag straight up or down so timing stays put.
• Ignoring audio clips: recordings stay in the old key unless you repitch them.

Frequently asked questions

How many semitones is an octave?

Twelve. Shifting by twelve rows gives the same note names an octave higher or lower.

Will transposing change the tempo?

No. Moving MIDI notes up or down changes pitch only. The tempo stays as it was.

Can I change the key halfway through a song?

Yes. Select only the notes in the later section and shift them. A move up of one or two semitones into the last chorus is a classic lift. Compare song structure and arrangement for where to place it.

What if I do not know my song's key?

You do not need to. Shifting by semitones and listening works without any theory. For help building melodies this way, see how to make a melody with no theory.