I am spreading paint around drums (7)
I believe the answer is:
timpani
'drums' is the definition.
(type of drums)
'i am spreading paint around' is the wordplay.
'i am' becomes 'I'm' (contraction).
'spreading' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'paint' with letters rearranged gives 'tpani'.
'im' put within 'tpani' is 'TIMPANI'.
(Other definitions for timpani that I've seen before include "Features of kitchen" , "Mini tap on a large drum" , "> kitchen equipment?" , "Tina Pim has a set of kettle drums" , "set of instruments" .)