Accept wife's appreciation of music (4)
I believe the answer is:
wear
'accept' is the definition.
(I've seen this before)
'wife's appreciation of music' is the wordplay.
'wife' becomes 'w' (abbreviation).
'appreciation of music' becomes 'ear' (as in 'having an ear').
'w'+'ear'='WEAR'
(Other definitions for wear that I've seen before include "Apparel" , "fashion" , "Damage from use" , "Have on; fray" , "Northern runner" .)