Fool inside blessing orchestral player (7)
I believe the answer is:
bassoon
'orchestral player' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'fool inside blessing' is the wordplay.
'fool' becomes 'ass' (both can mean a stupid person).
'inside' is an insertion indicator.
'blessing' becomes 'boon' (synonyms).
'ass' placed into 'boon' is 'BASSOON'.
Can you help me to learn more?
(Other definitions for bassoon that I've seen before include "wind player" , "Instrument heard by Wedding-Guest" , "Hollow instrument" , "It is played" , "Tenor of the oboe family" .)