Birds in the music room (4)

I believe the answer is:

emus

'birds' is the definition.
(emu is a kind of bird)

'in the music room' is the wordplay.
'in' indicates the answer is hidden within the clue.
'EMUS' can be found hidden inside 'the music room'.

(Other definitions for emus that I've seen before include "laboratory units" , "Aussie birds" , "Running birds" , "Muse about flightless Australian birds" , "Large flightless birds of Australia" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app