I was waiting on a few things while sitting in front of my computer, so I started playing around with Bitwig and a bunch of free Kontakt sampled instruments I've accrued. This doesn't use the Bitwig Grid but does make pretty heavy use of Bitwig's note FX and arpeggiator. E.g., each track (except some of the percussions) is just one to a few C (or G) notes on the piano roll and I make heavy use of the multi-note and arpeggiator note FX to grab random notes or chord voicings. Lots of randomness involved, so every playthrough is different. This is one snapshot.