Music provided by Charlie and the girls (8)
I believe the answer is:
cavatina
'music' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?
'by charlie and the girls' is the wordplay.
I cannot quite understand how this works, but
'by' could be 'at' and 'at' is present in the answer.
'charlie' could be 'c' (phonetic alphabet: alpha, bravo, charlie etc.) and 'c' is found within the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'provided' acts as a link.
Can you help me to learn more?
(Other definitions for cavatina that I've seen before include "simple song" , "air" , "Simple operatic aria" .)