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' says the answer is hidden in the clue.
'JOB' is hidden in the letters of 'banjo boys'.
'for' is the 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" .)