Women’s aptitude for music or sport (4)
I believe the answer is:
wear
'sport' is the definition.
(sport can mean to wear or display on one's person)
'women's aptitude for music' is the wordplay.
'women' becomes 'w' (standard abbreviation).
'aptitude for music' becomes 'ear' (I've seen this in another clue).
'w'+'ear'='WEAR'
'or' acts as a link.
(Other definitions for wear that I've seen before include "Become tiresome" , "Have on the body as clothes or ornaments" , "___ and tear" , "Become damaged by use" , "Durham river" .)