A gig for some of the banjo boys? (3)
I believe the answer is:
job
'a gig' is the definition.
(I've seen this in another clue)
'some of the banjo boys?' is the wordplay.
'some of' indicates the answer is hidden within the clue.
'JOB' can be found hidden inside 'banjo boys'.
'for' acts as a link.
(Other definitions for job that I've seen before include "Patient figure in the Bible - task" , "'Task, chore (3)'" , "Task; paid position" , "Book; task" , "Personification of patience" .)