Sites like karaoke-version.com offer backing tracks in multitrack format very inexpensively ($2.99 each!), so it’s possible to mute ANY tracks you don’t need, change key or tempo (with audio processing tools) and chop and restructure the song into whatever you need.

In fact, use a program like Ableton Live and you can do most of that on the fly.

I’m pretty busy this week, so no time to experiment with what you need, but honestly, I think I did most of this stuff by calling up a Performance FIRST, then playing the DAW into the arranger set the way the DAW recorded stuff. If volumes needed adjusting, I did it in the DAW.

Most of the times, I tend to solo each Part in the DAW and record it as an individual stereo audio track, so I can use my DAW’s audio plug-ins (compression, EQ, better reverbs etc) on the tracks. So it doesn’t really matter what volume each Part is, I’m going to mix it using the DAW.

I honestly can’t remember the last time I tried mixing it all in the arranger. Plus, I often substitute VSTi sounds for the arranger to get better drums, pianos, strings etc..

Just edit the header information for each Part in the DAW, then pay attention in the MIDI settings of the BK9 for whether incoming MIDI gets sent to JUST the ‘Song’ section (the 16 channels of the 16 Track Sequencer) or whether the channels for the Keyboard Parts get sent to the Keyboard Parts.

Best of luck! Roland unfortunately complicated things by having 16 channels for the sequencer PLUS five channels (UPR1 UPR2 LWR MBS & MI Parts) extra. It works great as long as you are using JUST the BK9 for everything, but complicates routing when using an external sequencer…