This probably doesn’t belong to to T11, is should be barry-1, check this old thread Music on 401.495? - #3 by fredy
Can you verify that it was visible during your observation period?
If it wasn’t then it would be a nice challenge to find which one is it.
EDIT:
Note to self, in case that Barry-1 wasn’t at FOV during the observation, also ENDUROSAT ONE, which is now re-entered, was transmitting the same music at 437.050 MHz New Satellites Suggestions for db: MemSat and EnduroSat - #15 by fredy, so it may give a hint which of the new satellites could transmitting this.