Composer doubling third part, obsessing over one A — wild songs etc (11)
I believe the answer is:
bacchanalia
'composer doubling' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'third part obsessing over one a wild songs etc' is the wordplay.
I cannot quite see how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is found within the answer.
'a' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bacchanalia that I've seen before include "undisciplined congress" , "drunken party" , "Drunken revels - a China cabal (anag)" , "orgies" , "Roman festival; wild revelry" .)