The Arturia Keystep allows the pattern sequencer to play on a MIDI channel while the musician can play the keyboard live on a different MIDI channel.
To connect the Arturia Keystep to two MIDI devices will require a MIDI thru splitter. Another option is to have a synth with MIDI thru placed after the Keystep in the chain like the Korg MicroKorg.
- Set the general MIDI channel by hitting the [shift] button and the key corresponding to the channel of the first external synth.
- Set the keyboard play MIDI channel by hitting the [shift] button with the [keyboard play] and the key corresponding to the channel of the second external synth.
- Program a sequence and play it.
- Hit the [shift] button with [keyboard play] and start playing the keyboard to trigger the second external synth.