My process: I don't have this song on CD, so I converted it from MP3 to AIFF in iTunes then imported it into Audacity. The non-Low portions of the song were sequenced in Schism Tracker, using samples I mostly generated myself; I used the "Change Tempo" effect in Audacity to match the BPM of the Low song to the new backing track I had already started to sequence. Then I exported the relevant vocal snippets to Schism Tracker and worked for a while to integrate them into my arrangement. When I was done, I exported the whole thing back to Audacity, where I did some fades and compression and then exported to MP3.
I really wanted to do some kind of mash-up for this assignment, but my most ambitious ideas (e.g., Alice Coltrane meets the Kinks!) were thwarted early on by my inability to gain any mastery over GarageBand. As Wednesday approached, I realized I'd have to stick to more familiar tools. So I came up with the concept that I eventually executed, namely, to give an upbeat, 8-bit arrangement to the most unlikely song I could think of: Point of Disgust, Low's direst dirge!
Problems I encountered: The "Change Tempo" effect ended up making the vocals sound a little janky. (I sped up the song from the original about 40%.) But I think the low-fi nature of my new arrangement helps mask that. I tried for a long time to tune out the backing track in the original, but unfortunately that damned piano is taking up the same space in the spectrogram as Mimi Parker's vocals. If the piano were a little quieter, I don't think my inability at beat matching would be so evident (especially in the second verse). Oh, and it doesn't help that the song doesn't stick to a constant tempo.