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Start and stop Live Loops cells in Logic Pro for Mac

You can start and stop cells individually, or start and stop all the cells in a scene (a column in the grid) simultaneously. Only one cell can play on a track at any time. You can select one or more cells in different scenes and queue them to play together. While a cell is playing, a circular indicator in the middle of the cell shows the current playback position. If cell looping is turned off, a rectangular indicator shows the current playback position.

Figure. A circular indicator in the middle of the cell showing the current playback position.

The point in time when a cell starts or stops is determined by the Quantize Start value. Quantize Start ensures that cells start at musically meaningful positions (beats or bars), so they are in sync with other cells and the project playhead position. You can change the Quantize Start value for the grid, for scenes, or for individual cells. Triggered cells flash to indicate that they are queued to start at the next quantize start point.

If you trigger a cell too late to start at the desired quantize start point, it starts playing at the next quantize start point. The cell will still be in sync with the project tempo, but it might lead to undesirable musical results, especially when cells are following a short quantize start value. Smart Pickup ensures that cells start immediately at the correct position, even when triggered slightly late. However, this can result in the beginnings of the cells being skipped in order to ensure that the cells are at the correct position when they start playing. In order to avoid this and ensure that cells start playing from the Start position set in the Cell inspector, turn Smart Pickup off and trigger cells with enough time before the upcoming quantize start point.

Cells in the Live Loops grid play at the project tempo. Apple Loops and untagged loops added to cells automatically play at the project tempo, as do any audio files containing tempo information. When you add an audio file without tempo information to a cell, Logic Pro analyzes the tempo of the audio file and adjusts the file to the project tempo. You can manually edit Smart Tempo and transients in the Cell Editor.

By default, when a cell is playing on a track containing regions, the regions on that track are silent. You can change this behavior using the buttons in the Divider column. See How the Live Loops grid and Tracks area interact.

Play cells

In Logic Pro, do any of the following:

  • Start a cell: Click the Play button in the center of a cell.

    Figure. The Play button in the center of a cell.

  • Start all the cells in a scene: Click the trigger  below a scene.

  • Start all selected cells: Use the Trigger Live Loops key command (Return).

When cells are playing, the Play buttons in the cells become Stop buttons.

Stop cell playback

In Logic Pro, do any of the following:

  • Stop playback of a cell:

    • Click the Stop button of the playing cell.

      Figure. The Stop button in the middle of a playing cell.

    • Click the Stop button of an empty cell on the same track as the one playing.

  • Stop playback of all cells at the next quantize start point:

    • Click the Grid Stop button  at the bottom of the Divider column.

      Figure. The pointer over the Grid Stop button at the bottom of the Divider column.

    • Click the Scene trigger  below an empty scene.

  • Stop playback of all cells immediately:

    • Use the Play or Stop key command (Space bar).

    • Use the Stop key command (0 on the numeric keypad).

  • Stop playback of all selected cells: Use the Trigger Live Loops key command (Return).

Queue cells and scenes

You can queue cells and scenes to start playing when project playback starts or when you want cells in different scenes to start at the same time. Playing cells are automatically queued when you stop a project. You can then move the playhead and restart the queued cells at a different project position.

In Logic Pro, do any of the following:

  • Queue a cell: Option-click the center of the cell you want to queue.

  • Queue multiple cells: Select one or more cells, then do either of the following:

    • Control-click one of the selected cells, then choose Queue Cell Playback from the shortcut menu.

    • Use the Queue Cell/Scene Playback key command (Option-Return).

  • Queue a scene:

    • Option-click the trigger of the scene you want to queue.

    • Control-click the trigger of the scene you want to queue, then choose Queue Scene from the shortcut menu.

    • Select the scene you want to queue, then use the Queue Cell/Scene Playback key command (Option-Return).

The queued cells start flashing.

To start queued cells playing, do one of the following: Start project playback, click the Resume button  in any of the queued cells, or use the Trigger Live Loops key command (Return) to play queued cells at the next quantize start point.

Figure. The Resume button in the middle of a queued cell.

You can dequeue all queued cells by using the Queue Cell/Scene Playback key command again.

Set the Quantize Start value

You can set the Quantize Start value for the entire Live Loops grid, for a scene, or for individual cells, and change it while cells are playing. When you trigger a scene, all cells in the scene use the Quantize Start value for that scene. When you start or stop individual cells, each cell uses its own Quantize Start value.

  • To set the Quantize Start value for the Live Loops grid: Choose a value from the Quantize Start pop-up menu near the upper-right corner of the grid.

    Figure. Quantize Start value for the grid.

  • To set the Quantize Start value for a scene: Control-click the Scene trigger , choose Quantize Start, then choose a value from the submenu.

  • To set the Quantize Start value for cells: Select one or more cells, then do one of the following:

    • Click the disclosure arrow in the Cell inspector next to Trigger Mode, then choose a value from the Quantize Start pop-up menu.

      Figure. The Quantize Start pop-up menu in the Cell inspector.

    • Control-click a cell, choose Playback > Quantize Start, then choose a Quantize Start value from the submenu.

In addition to bar and beat values, you can also choose the following Quantize Start options:

  • Cell End: If another cell in the same row is playing, the triggered cell starts when the playing cell reaches the end of the loop.

  • Off: Cells start and stop when you click them, regardless of the Quantize Start value. Note that this can lead to cells playing out of sync.

  • Global: The cell or scene follows the Quantize Start value of the grid. This is the default setting for cells and scenes, and probably the best choice for most situations.

Turn on Smart Pickup

  • Click the Quantize Start pop-up menu in the upper-right corner of the grid, then choose Smart Pickup.

Set the trigger mode

The trigger mode in Logic Pro determines how a cell starts and stops when you click the Play/Stop button. Both actions are subject to the Quantize Start value. You can choose three trigger modes:

  • Start/Stop: Cells start and stop playing when you click them.

  • Momentary: Cells start playing when you click and hold the pointer on them, and stop playing when you release the pointer.

  • Retrigger: If a cell is playing and you click it again, it starts playing from the beginning. Cells set to Retrigger can be stopped only by starting another cell or clicking the Stop button in an empty cell in the same row, by stopping the row using the Divider column, or by stopping the entire grid.

Do either of the following:

  • Select one or more cells, then choose a trigger mode from the Trigger Mode pop-up menu in the Cell inspector.

    Figure. Trigger Mode setting in the Cell inspector.

  • Control-click a cell, choose Playback > Trigger Mode, then choose a trigger mode from the submenu.

You can also change the trigger mode for scenes.

Change the start behavior of a cell

The Play From setting determines the start behavior of a cell. By default, cells start playing from the Start position. However, depending on the content and timing of your music, you can choose other start behavior settings to create interesting transitions between cells.

  • In Logic Pro, select one or more cells and choose one of the following settings from the Play From pop-up menu in the Cell inspector:

    Figure. Play From setting in the Cell inspector.

    • Start: The cell starts at the position determined by the set Start position.

    • Stop Position: The cell starts playing from the point where it last stopped, similar to Play/Pause.

    • Playing Cell Position: If another cell in the same row is playing, the cell starts playing from the position where the first cell stops. Otherwise, the cell starts from the Start position.

    • Playhead Position: The cell starts from the position where it would be, as if it had been playing from the beginning of the project. Otherwise, the cell starts from the Start position.

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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