Mozart's pack? (8)
I believe the answer is:
wolfgang
'mozart's' is the definition.
(I've seen this before)
'pack?' is the wordplay.
I cannot quite see how this works, but
'pack?' could be 'wolf' (wolf pack is a kind of pack) and 'wolf' is found in the answer.
The remaining letters 'gang' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for wolfgang that I've seen before include "Austrian composer of 'Don Giovanni'" , "Mozart's first name" , "A famous German waltz god (anag) -- composer" , "Name of German boy" , "-- Amadeus Mozart" .)