Composer to manage being heard (6)
I believe the answer is:
handel
'composer' is the definition.
(Handel is an example)
'manage being heard' is the wordplay.
'manage' becomes 'handle' ('handle' can be a synonym of 'manage').
'being heard' shows a homophone (sound like).
'handle' sounds like 'HANDEL'.
'to' acts as a link.
(Other definitions for handel that I've seen before include "German-born composer to the ` `Messiah' '" , "George Frideric --, composer" , "Anglo-German composer" , "German scorer" , "Composer of Messiah, d.1759" .)