Hi D rQuentum,
BSP can act as a MIDI to CV converter when not playing back or when the corresponding sequencer is muted.
When the BSP is playing back, inputting MIDI notes with an external MIDI device will perform transpositions.
on record i hear sound but the BSP record all the trigger on the same note ?
You need to change the time division and the BPM (RATE knob) to match what you want to play.
Do not hesitate to have a look at the manual (available for free and without registration on Arturia website).
Regards,
Y.