Shaking tambourine? Not our sort of music (7)
I believe the answer is:
ambient
'sort of music' is the definition.
(I've seen this before)
'shaking tambourine not our' is the wordplay.
'shaking' indicates an anagram.
'not' suggests deleting specific letters.
'tambourine' with 'our' taken away is 'tambine'.
'tambine' anagrammed gives 'AMBIENT'.
(Other definitions for ambient that I've seen before include "Of music, say, played at low volume to create atmosphere" , "Going around" , "Relating to the immediate environment" , "sort of music" , "relaxed atmosphere" .)