Thanks for all your entries
We had 11 setters and 34 clues and some of you were quite prolific (Mattrom, Spike and Buddy).
I had to tabulate on the back of an envelope but we do have a clear winner. Those with 5 votes or more are:-
On 5. Buddy #2, Spike #24, PDS #28, Mattrom #30
On 6. Aristo #4
On 8. Mattrom #8
However with 11 votes we have Buddy taking the Gold for his amusing and musically themed
Composer incorporates second note: it's a breakthrough! (6)
I also originally wanted to use Bach in some way and came up with "Queen backed into composer of fugues" but Buddy beat me to it so I started looking for a hidden.
Wow, thanks to all for the votes and, it seems, to Chris for being uncharacteristically slow on the draw.
I liked the clips - I recall the dambuster raid as a theme for one of the puzzles (EV or Listener?) not too long ago. Many more than just two notes in that last clip! Apparently there are some classical works built around just one note.