The Piano Roll is the window where you edit individual notes

The Piano Roll in Logic Pro is the editor that shows your notes as horizontal bars on a musical staff. It lets you move notes around, change their length, adjust their timing, and fix mistakes without re-recording. To open it, double-click any MIDI region on your timeline, or select a MIDI region and press Enter on your keyboard.

If you have a MIDI region selected but nothing happens when you press Enter, make sure you are not in a text field or naming mode. Click somewhere on the main timeline first to deselect any text boxes, then try again.

Key Takeaways

  • Double-clicking a MIDI region opens the Piano Roll automatically in most cases.
  • Pressing Enter while a MIDI region is selected also opens the Piano Roll if you are not in text-editing mode.
  • The Piano Roll shows notes as horizontal bars you can drag, resize, and delete directly.
  • If the Piano Roll does not open, check that you selected a MIDI region and not an audio region or empty space.

Double-Click the MIDI Region on Your Timeline

The fastest way to open the Piano Roll is to double-click directly on the MIDI region you want to edit. A MIDI region appears as a colored block on a track labeled with an instrument name like "Arpeggiator" or "Strings". Double-clicking anywhere inside that block opens the Piano Roll in the lower half of your screen by default.

If the Piano Roll opens in a separate window instead of below your timeline, that is fine — it still works the same way. You can drag the window to reposition it or close it and use the menu method instead if you prefer the inline view.

Use the Keyboard Shortcut If You Prefer

After you select a MIDI region by clicking it once, press Enter (not Return on some keyboards — try both if one does not work). This opens the Piano Roll without needing to double-click. This method is faster if you are switching between multiple regions and want to edit each one.

Make sure the region is highlighted in blue or white before you press Enter. If nothing happens, click on the timeline background first to clear any active text fields, then click the region again and try Enter.

Open It Through the Window Menu

If neither the double-click nor the keyboard shortcut works, you can open the Piano Roll manually. Go to Window in the top menu, then select Editors, then Piano Roll. This opens the Piano Roll as a floating window. You can then click on any MIDI region to view and edit its notes in that window.

This method is slower but useful if your keyboard shortcut is not working or if you want the Piano Roll to stay open while you select different regions. The floating window will update to show whichever MIDI region you click on.

Make Sure You Selected a MIDI Region, Not Audio

The Piano Roll only works with MIDI regions — the colored blocks that represent note data. If you double-click an audio region (usually labeled with a waveform preview), the Sample Editor opens instead, which is a different tool for editing recorded sound.

MIDI regions are solid colors with no waveform inside them. Audio regions show a visual representation of the sound wave. If you are trying to open the Piano Roll and nothing is happening, check that you are clicking on a MIDI region and not an audio track or an empty part of the timeline.

Understand What You Are Looking At

Once the Piano Roll is open, you will see a musical staff on the left with note names (C, D, E, and so on) and horizontal bars representing each note in your recording. The length of each bar shows how long the note plays. The position left to right shows when the note starts and stops in time.

You can click and drag any note to move it up or down in pitch, or left or right in time. You can drag the right edge of a note to make it longer or shorter. You can click a note once to select it, then press Delete to remove it. These edits happen in real time — you do not have to re-record anything.

Close the Piano Roll When You Are Done

To close the Piano Roll, click the X button in the top right corner of the window, or press Enter again if it is open in the inline view below your timeline. Closing the Piano Roll does not delete your edits — all the changes you made to the notes stay in the MIDI region.

If you opened the Piano Roll as a floating window and want to switch back to the inline view below your timeline, close the floating window and double-click the MIDI region again. Logic will remember your preference for next time.

Frequently Asked Questions

Why does nothing happen when I double-click a MIDI region?

Make sure you are clicking on a MIDI region (solid color, no waveform) and not an audio region or empty space. If the region is correct, try clicking elsewhere on the timeline first to clear any active selections, then double-click the region again. If it still does not work, use the Window menu method instead.

Can I have the Piano Roll open and the timeline visible at the same time?

Yes. When you double-click a MIDI region, the Piano Roll usually opens in the lower half of your screen, and your timeline stays visible above it. You can drag the divider between them to make one larger or smaller. If the Piano Roll opened as a floating window instead, you can move or resize it to see both at once.

What is the difference between the Piano Roll and the Score Editor?

The Piano Roll shows notes as horizontal bars on a staff, which is easier for editing timing and pitch. The Score Editor shows notes as traditional sheet music notation. Both edit the same MIDI data — you can switch between them without losing your work. Open the Score Editor the same way: Window > Editors > Score.

Can I edit multiple MIDI regions at once in the Piano Roll?

No. The Piano Roll shows one MIDI region at a time. If you want to edit notes across multiple regions, you can select all the regions, then use the Arrange window to move or copy them together. To edit the notes inside each region individually, open them one at a time in the Piano Roll.

How do I get back to the timeline view if I accidentally closed the Piano Roll?

Double-click the MIDI region again, or select it and press Enter. Your edits are still there — closing the Piano Roll does not undo anything. If you want to see both the timeline and Piano Roll at the same time again, use the double-click method, which opens it in the inline view below your tracks.