Kind of drum or fiddle (4)
I believe the answer is:
bass
This clue is a double definition.
'kind of drum' is the first definition.
(I've seen this in another clue)
'fiddle' is the second definition.
(thesaurus)
(Other definitions for bass that I've seen before include "bottom of sound?" , "Large fish - singer" , "Male singer and saltwater fish" , "Freshwater fish and lowest voice" , "Scottish rock" .)