Musicians send raunchy message containing note (6)
I believe the answer is:
sextet
'musicians' is the definition.
(a sextet is a group of six musicians)
'message containing note' is the wordplay.
'message' becomes 'sext' (I have seen 'Explicit message' mean 'sext' so perhaps 'message' could also mean 'sext').
'containing' indicates putting letters inside.
'note' becomes 'te' (musical note as in do re mi fa so la ti).
'sext' placed around 'te' is 'SEXTET'.
'send raunchy' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for sextet that I've seen before include "Chamber group (1)" , "Group of six players" , "Musical work" , "Music for six" , "Half-dozen in a group" .)