I have a problem I've been struggling with for days - please help if you can! I'm working with the Akai MPC2000xl, the Roland XP50 keyboard (is the slave) and another keyboard (the master). I'm using the Akai as the sequencer. Here's my issue: A bass line is record into the Akai on one track. when i record a keyboard track, theo original bassline now takes on the keyboard sound for the bass sound. I'm changing the MIDI channels (on the Akai) when I'm recording . I'm hoping somebody can end my frustation! Thank you!