I got 3 more recordings done, bringing my total to 4.
My new plan of, ahem, 'attack,' is to do 10 recordings, 5 using the piano melody version, and 5 using the version without the piano melody, to increase my odds that at least one is an alright recording. This is necessary partly because I'm not sure if I'd be better off with the piano melody, or without it. I'll compress them with WinRAR and send 'em over to Petrie. When he's satisfied with one of my recordings, I'll send a second wave that only includes the melody part at the end with the overlapping "Maybe when things change."