Recite trendy new note (6)
I believe the answer is:
intone
'recite' is the definition.
(I've seen this before)
'trendy new note' is the wordplay.
'trendy' becomes 'in' ('in' can mean fashionable).
'new' indicates anagramming the letters.
'note' anagrammed gives 'tone'.
'in'+'tone'='INTONE'
(Other definitions for intone that I've seen before include "Recite without inflection" , "Recite with little variation in pitch" , "Speak in chant or drone" , "Recite as a chant" , "Recite in a chanting voice" .)