On playing song I didn't recognize, S9 signal over a S4 noise floor.
Began sending morse code groups over the music.
For what its worth, here is the message:
AGIJM OGKGS PRIJJ BMSLII=
WIETH FDAAJ MRARN TIEES=
BLEAN OOFJA RANBR LANTA=
00000
All 5-letter groups except one, maybe the 2 I's are really an H.