Arturia KeyStep Pro Keyboard with Advanced Sequencer and Arpeggiator - Manual (Page 43)

4.2.6.2. Mute Button
The Mute button engages or disengages the track mute function. When this button is
illuminated, its associated track is muted and does not transmit any data. In other words,
devices connected via MIDI, CV or USB will not receive any signals when mute is engaged.
Holding down 'Shift' while pressing the Mute button will engage or disengage Solo mode.
This feature is similar to the 'solo' button found on many mixing boards. When Solo mode is
engaged, the Mute button lights up in blue and you will only hear the soloed track (or tracks).
Note that the Mute button will only mute the sequences and arpeggios that are running,
possibly including a drum sequence on Track 1. You can still have a muted channel active
and play its sounds on the keyboard.

♪ : The Mute and Solo functions can be useful in both composing and performing contexts. For
example, while composing or mixing you may need to solo a certain track to focus on it without
distraction; in a performance context, you may want to mute and unmute sections to build up or
breakdown a song.
4.2.6.3. Note LED
This LED lights up whenever a track's sequencer or arpeggiator is playing and/or whenever
you are playing notes on the keyboard. This handy feature instantly lets you know what is
happening on all four of your tracks without you having to select a track and look at its Step
Buttons or Keyboard LEDs.
4.2.6.4. Sequencer and Arpeggiator Buttons
The KeyStep Pro has four tracks, each with its own independent sequencer or arpeggiator.
Sequencer Arpeggiator Drum trigger (gates) sequencer
Track 1 Yes No Yes
Track 2 Yes Yes No
Track 3 Yes Yes No
Track 4 Yes Yes No
Each track has a pair of buttons labelled Seq and Arp (or Seq and Drum on Track 1). These
buttons let you set the functions for their associated track. The currently selected option is lit
up, and only one mode (Seq or Arp) can be active at any time.
Arturia - User Manual Keystep Pro - KeyStep Pro Overview 37