Re Mistlethrush: I love that track. Philip, is there a story behind that song?
And, as far as "dream" tracks, I'd add "The Clobberer" (which I don't think was ever recorded),
and "Faithful Departed", which has my vote as a track the Pogues _should_ have recorded.
There's not really much of a story behind "Mistlethrush". Andrew wrote some lyrics and asked if I would write a tune for it. He didn't especially like the results, which is why the song never progressed further. I think the lyrics, a Nature Boy's tribute to his gal pal, are a sort of coded love ballad to Deborah Korner, Andrew's partner, who was still alive then and who was later, tragically, the force behind "My Baby's Gone" and "Four O'Clock In The Morning". David The Man Behind The Wire Simon shares your enthusiasm for "Faithful Departed", by the way.