Animals try bid to unsettle other groups of musicians (8,5)

'groups of musicians' is the definition.
(a military band is a musical group)

'animals try bid to unsettle' is the wordplay.
'to unsettle' indicates anagramming the letters (letters become unsettled).
'animals'+'try'+'bid'='animalstrybid'
'animalstrybid' anagrammed gives 'MILITARY BANDS'.

'other' is the link.
This may not be correct. It may be part of another bit of the clue.