<br />One thing I've noticed is that ending the track doesn't seem to work very well yet - though they do end on the tonic, it sounds like the song's just falling apart somehow or there's some instrument "lagging behind", doing a little ending motive that seems out of place.<br />
I totally agree. The main problem is that I haven't created any special "end motifs" yet for harmony and bass (and melody actually). The current motifs assume that they should connect with something that follows, which sometimes sounds OK when another phrase follows. Like you say, it sounds bad at endings and and also when there is a lot less content that follows. I cheat with the melody motif by always using a single long note at the end of phrases.
I am also working on to improve the combination of instruments and the breakdowns. The module is now much better parameterized so you can for example change only a small part of a song and keep everything else.
Thanks for listening and the feedback. I appreciate it a lot!