So I picked up my guitar and bashed these out.
110204_01 - 100% improvised (in three passes, for the three parts), although the core idea (octave lydian melody in 11 over E drone) is something I've been playing with for a few days, but this version discards the specific melodic ideas i'd developed previously
110204_02 - the main riff of this is something i made up a few days ago on the spot when running through guitar sounds on my main box when i hit a metal-y guitar with a drop-D (basically I played a pattern that would have been a different riff, but the drop-D changed it, and i embraced it). it's mostly in 15 and 21; when i noodled it out originally i embraced the "large odd numbers" and had variations in 19, 13, and 11 as well, but they didn't make this simplified version. Note that this is played in E (not drop-D), so the fingering changed, and it sort of resembles sketch #1 melodically.