For some reason the basses and tenors are singing a combined part, which is too high for the basses and too low for the tenors. I'm having incredible difficulty with it (but I've had no formal training, some of the others are faring better), and in fact I could sing the entire first part an octave lower were it not for one note.

Also, I figured how to read music! A fellow CompSci (or possibly a physicist) pointed out to me that it's just a graph of log(frequency) vs. time! That makes so much more sense than all that jargon the music people were throwing around!