Show love for musical composition (8)
I believe the answer is:
concerto
'musical composition' is the definition.
(I've seen this before)
'show love' is the wordplay.
'show' becomes 'concert' (concert is a kind of show).
'love' becomes 'o' (love means zero in tennis).
'concert'+'o'='CONCERTO'
'for' acts as a link.
(Other definitions for concerto that I've seen before include "Work for orchestra and soloist(s)" , "Orchestral composition" , "Musical composition" , "Work for soloist and orchestra" , "Composition for orchestra and soloist" .)