Tackle composer on the radio? (6)
I believe the answer is:
handle
'tackle' is the definition.
(thesaurus)
'composer on the radio?' is the wordplay.
'composer' becomes 'handel' (George Frideric Handel).
'on the radio?' shows a homophone (sound like) (I've seen 'on the radio' mean this).
'handel' sounds like 'HANDLE'.
(Other definitions for handle that I've seen before include "Ability to walk on board ship" , "Part by which something is carried" , "Grip, hold" , "Informally, personal title or name - sounds manual" , "Manipulate; name" .)