Monk music unplanned for recital (6)
I believe the answer is:
chants
'monk music unplanned for recital' is the definition.
I can't tell whether this defines the answer.
'music unplanned for recital' is the wordplay.
'music' becomes 'chant' (chant is a kind of music).
'unplanned for recital' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'chant'+'s'='CHANTS'
Can you help me to learn more?
(Other definitions for chants that I've seen before include "Sings in one tone" , "Sings or speaks in monotonous way" , "Snatch (anag)" , "Speaks or sings on a single note" , "Sings in monotone, say psalms" .)