Group of musicians crash tore apart (9)
I believe the answer is:
orchestra
'group of musicians' is the definition.
(I've seen this before)
'crash tore apart' is the wordplay.
'apart' is an anagram indicator (the word is broken apart).
'crash'+'tore'='crashtore'
'crashtore' is an anagram of 'ORCHESTRA'.
(Other definitions for orchestra that I've seen before include "Other cars (anag.)" , "Sort of stall" , "Gamelan, for instance" , "Brass, woodwind, strings and percussion" , "Group of musical instrumentalists" .)