Lynch seems to be hiding his music in the show. The first found instance was during Sarah Palmer's first scene, where his song Last Call is played
http://welcometotwinpeaks.com/music/...ing-last-call/
Tonight I figured out that when you slow the part down when the convenience store is disappearing, you can hear Lynch's song Star Dream Girl
https://www.dropbox.com/s/yqbpyp9qa3...ore1.flac?dl=0
for camparison
I don't think anyone else has discovered this. Or at least if they did, I haven't seen it.