College pinks trashed bars sounding well hammered (12)

I believe the answer is:
glockenspiel
'bars sounding well hammered' is the definition.
I can't tell whether this defines the answer.
'college pinks trashed' is the wordplay.
'trashed' indicates an anagram.
'college'+'pinks'='collegepinks'
'collegepinks' is an anagram of 'GLOCKENSPIEL'.
Can you help me to learn more?
(Other definitions for glockenspiel that I've seen before include "Bell-like instrument" , "it's in the kitchen" , "Percussion instrument with metal bars" , "Music producer" , "Instrument played with hammers" .)
