Hell's glockenspiel? (5)
I believe the answer is:
bells
'glockenspiel?' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for bells that I've seen before include "Ringing objects" , "Ringing instruments" , "Musical instruments" , "Those ringing in the New Year" , "Chimes" .)