I'm not doing at all well even though I have now got the theme. Only four done after several hours. I was hoping for more hints on here, but think I may have left my brain behind today. I started after the quick crossword and lunch as usual after a busy morning of chores, but kept falling asleep. I asked my husband (the musical one) for a Schubert prelude but he only knows of one. He's keen jazz fan too, so I'll see if he can shed any light on that clue. He's given me a couple of Bohemian composers, but I can't see how they fit in, so I guess it is more cryptic than that.
I'll be back in a bit if I haven't given up.