Drive men to eccentric composer (10)
I believe the answer is:
monteverdi
'composer' is the definition.
(Claudio Monteverdi, 1567-1643)
'drive men to eccentric' is the wordplay.
'eccentric' is an anagram indicator.
'drive'+'men'+'to'='drivemento'
'drivemento' with letters rearranged gives 'MONTEVERDI'.
(Other definitions for monteverdi that I've seen before include "One composer" , "Composer of "Orpheus"" , "Claudio --, 16th-17th century Italian composer" , "Claudio -, an early composer of operas" , "Italian scorer" .)