Met to compose song (5)
I believe the answer is:
motet
'song' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?
'met to compose' is the wordplay.
'compose' is an anagram indicator.
'met'+'to'='metto'
'metto' with letters rearranged gives 'MOTET'.
Can you help me to learn more?
(Other definitions for motet that I've seen before include "Anthem or church cantata" , "Short sacred vocal work" , "Word; fixed period" , "Religious choral composition" , "Polyphonic choral liturgical piece" .)