Disparage notes and weep (5)
I believe the answer is:
decry
'disparage' is the definition.
(I've seen this before)
'notes and weep' is the wordplay.
'notes' becomes 'DE' (two musical notes).
'and' means one lot of letters go next to another.
'weep' becomes 'cry' (synonyms).
'de'+'cry'='DECRY'
(Other definitions for decry that I've seen before include "Derogate" , "'Condemn, belittle (5)'" , "Disparage - sounds lachrymose" , "Speak of in slighting way, belittle" , "Disparage, put down" .)