I would like to see some videos of folks doing live covers of pop standards with a Launchpad. (And presumably, a compact keyboard controller for melody.) Everything I see on YouTube, etc., is folks making their own "beats": House, Hip Hop, etc., or launching pre-recorded audio samples ("clips.") Not that that's a bad thing. But I play for fun, and I don't write my own music, so I never explored this type of setup because I assumed it wouldn't be useful to me.

I'm not saying that it CAN'T be done. But it would certainly take a lot of preparation. Maybe even a different setup for each song (although that isn't much different than the way we use registrations.)

I also wonder how competitive the ergonomics are (i.e., location of the primary controls, chord fingering and available chord selections, etc.), compared to a pro arranger.

I'm always looking for a better mousetrap, and for a long time I've wondered whether it would be easier to use a grid-type controller to trigger chords. (I don't play left-hand.) But seeing some successful implementations would be instructive.