Chanted (6)
'chanted' is the definition.
('intone' can be a synonym of 'chant')
This is all the clue.
(Other definitions for intoned that I've seen before include "sounded like the vicar?" , "Started a psalm, perhaps" , "it's said, in a monotonous way" , "Recited almost monotonically" , "Said flatly" .)
'chanted' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sang that I've seen before include "Made music with the voice" , "Spilt the beans" , "squealed" , "Did numbers" , "produced a melody" .)
(Other definitions for sung that I've seen before include "Performed vocally; Chinese dynasty" , "Celebrated dynasty" , "Chinese dynasty; uttered melodiously" .)
(Other definitions for choral that I've seen before include "For a large number of voices" , "Involving many singers" , "Beethoven symphony" , "... his ninth ..." , "Pertaining to a group of singers" .)