Instrument played by a low singer with nothing on (7)
I believe the answer is:
bassoon
'instrument' is the definition.
(bassoon is a kind of instrument)
'by a low singer with nothing on' is the wordplay.
'by' says to put letters next to each other.
'a low singer' becomes 'bass' (I've seen this before).
'with nothing' becomes 'o' (I've seen this in other clues).
'bass' next to 'o' is 'basso'.
'basso'+'on'='BASSOON'
'played' is the link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for bassoon that I've seen before include "Instrument heard by Wedding-Guest" , "So-so ban on the instruments" , "So-so ban over the instrument" , "Double-reed instrument" , "Low wind instrument" .)