Bit of stuff in chorus perhaps (10)
I believe the answer is:
smattering
'bit' is the definition.
(I've seen this before)
'stuff in chorus perhaps' is the wordplay.
'stuff' becomes 'matter' (I've seen this in other clues**).
'in' indicates putting letters inside.
'chorus perhaps' becomes 'sing' (chorusing is a kind of singing).
'matter' going into 'sing' is 'SMATTERING'.
'of' acts as a link.
(Other definitions for smattering that I've seen before include "little knowledge" , "Dash" , "bit of learning" , "Taste" , "Little bit" .)