Matrix area

Creates a simple matrix with all track inputs set to audio channels.

Creates a simple matrix with all track inputs set to MIDI devices.

Creates a simple matrix with half of the track inputs set to audio channels and the other half to MIDI devices.

Adds a new column to the matrix and associates it with a newly created REAPER track.

Adding a new column automatically creates a corresponding REAPER track, on which clips in this column will be played back. See Column track.

Adds a new row to the matrix

This arrow tells that you are seeing only a part of the matrix and that you can scroll in the indicated direction to see more of it!

A single click stops all playing clips according to their stop timing.

A double click stops all playing clips instantly.

Selects the matrix settings cell. This makes the inspector show settings related to the complete matrix.

See Matrix inspector.

This lights up if the column is in exclusive mode, which means that only one slot at a time will usually be playing.

You can also click this button to toggle exclusive mode on/off.

This is a shortcut for Exclusive mode.

This lights up if the column follows scenes. You can also click this button to follow/unfollow.

This is a shortcut for Follow scenes.

This lights up if the column overrides at least one matrix setting.

A single click stops all playing clips in this column according to their stop timing.

A double click stops all playing clips in this column instantly.

Selects this column cell. This makes the inspector show settings related to this column.

See Column inspector.

Plays all clips in this row whose column follows scenes.

See Scene.

Selects this row cell. This makes the inspector show settings related to this row.

See Row inspector.

Plays, retriggers or stops all clips in this slot depending on the trigger behavior configured for the matrix.

Stop: A single click stops all contained clips according to their stop timing. A double click stops all contained clips instantly.

Starts recording a new clip into this slot.

This is only available if the corresponding Column track is armed.

Selects this slot cell. This makes the inspector show settings for each clip in this slot.

A double click on a filled slot cell opens the waveform view or the MIDI editor of the primary clip in this slot. A double click on an empty slot cell creates an empty MIDI clip.

See Slot inspector.

Shows the number of clips contained in this slot if there’s more than one.

If there’s more than one clip in the slot, all will be triggered at the same time. However, each one will start according to its individual start timing.