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Snap to grid in the Piano Roll Editor in Logic Pro for Mac

The Piano Roll Editor has a grid, similar to the Tracks area grid. You can set the Snap value for the Piano Roll grid separately from the Snap value for the Tracks area grid. The Piano Roll Editor Snap pop-up menu contains additional values, including specific note values.

The Snap pop-up menu setting applies to moving, copying, cutting, and resizing note events; moving, adding, and resizing markers; and setting the cycle area. You can snap notes and other items using either relative or absolute positioning, and can temporarily override the snap grid, allowing finer edits and adjustments.

Set the Snap value for the Piano Roll Editor grid

  • In Logic Pro, choose a value from the Snap pop-up menu in the Piano Roll Editor menu bar:

    Figure. Snap pop-up menu in the Piano Roll Editor menu bar.
    • Smart: Edit operations snap to the nearest bar, beat, sub-beat, and so on, depending on the current ruler division value and the zoom level.

    • Bar: Edit operations snap to the nearest bar.

    • Beat: Edit operations snap to the nearest beat in a bar.

    • Division: Edit operations snap to the nearest division (this is the time signature shown in the LCD and ruler).

    • Ticks: Edit operations snap to the nearest clock tick (1/3840 of a beat).

    • Frames: Edit operations snap to the nearest SMPTE frame.

    • Note values: Choose a note value between 1/1 (whole note) and 1/64–triplet.

By default, the Snap functionality is absolute, so that when you move notes or other items, they snap to the nearest grid position. When Snap Notes to Absolute Value is active, moving an event moves it to the exact grid position. For example, moving a note from position 1.2.1.16 to around bar 2 results in it being snapped to the beginning of the bar (position 2.1.1.1), rather than to its relative position (2.2.1.16). Absolute positioning is useful when you want notes to fall exactly on the beat. You can override absolute positioning with the Snap Notes to Relative Value option.

Snap to a relative position

  • In Logic Pro, choose Snap Notes to Relative Value from the Snap pop-up menu.

This feature works in conjunction with the chosen snap grid division. For example, if a note is placed at position 1.2.1.16, and you move the note two beats forward (with the Snap value set to Bar), the note snaps forward one bar relative to its original position, to 2.2.1.16, (not 2.1.1.1 or 2.2.1.1).

Override the snap grid

In Logic Pro, do one of the following:

  • Press and hold Control while performing the editing operation.

    The division value chosen in the LCD (1/16, for example) determines the editing grid scale.

  • Press and hold Control-Shift while performing the editing operation.

    The editing grid switches to ticks.

For more information about snapping items to the grid, see Snap items to the grid in Logic Pro.

Download the guides:

Logic Pro User Guide: PDF

Logic Pro Instruments: PDF

Logic Pro Effects: PDF

Control Surfaces Support Guide: PDF

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