A musical group on leave (7)

I believe the answer is:

abandon

'leave' is the definition.
(to abandon is to leave or desert)

'a musical group on' is the wordplay.
'musical group' becomes 'band' (band is a kind of musical group).
'a'+'band'+'on'='ABANDON'

(Other definitions for abandon that I've seen before include "Cast aside" , "Desert; lack of restraint" , "Desert, strand" , "Completely give up; desert" , "Jack in" .)

I've seen this clue in the Sydney Morning Herald.

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