Well, I made the mistake of purchasing the original Motif thinking that I would have an easy time with the on-board sequencer. After all, I composed probably 50+ songs on Ensoniq ESQ1 and VFX-SD keyboards over the years, and how could the Motif be any harder than those. The sequences I was composing for this were actually insanely simple - turn signal sounds to be exact. Perhaps a little known fact is that a good number of car companies play the turn signal sound out of the radio/speaker system in the car. One has completely control over the waveform, timing, etc. with many of these systems.

Let me just say that I understand why Jacobins might want to move away from the Motif ES7, if it's sequencer is similar to the original Motif.

The Ensoniq's sequencers 'made sense' to me. The Motif - that felt like I was using something from an alternate universe. A simple, single-track sequence of a note on/off with a regular timing pattern was an exercise in frustration. I ended up controlling the Yamaha with a DAW software. It was actually easier to do it this way - for me at least.

With that said, jazzmammal's suggestion sounds like the ideal setup for you. Play your live parts 'live', along with recordings of your backing tracks. No need to rely upon MIDI playback.