Roughly grasp piece by composer on the radio (9)
I believe the answer is:
manhandle
'roughly grasp' is the definition.
(I know that to manhandle is to grasp rough)
'piece by composer on the radio' is the wordplay.
'piece by' becomes 'man' (man can mean a chess piece. I am not sure about the 'by' bit.).
'composer' becomes 'handel' (George Frideric Handel).
'on the radio' shows a homophone (sound like).
'handel' sounds like 'handle'.
'man'+'handle'='MANHANDLE'
Can you help me to learn more?
(Other definitions for manhandle that I've seen before include "Treat roughly, or move by human effort alone" , "Push (someone) about roughly" , "Mistreat" , "Give rough treatment to" , "Knock around" .)