Musician wanting leader of band's help (6)
I believe the answer is:
assist
'band's help' is the definition.
'assist' can be an answer for 'help' (to assist someone is to help them). I am not certain of the 'band's' bit.
'musician wanting leader' is the wordplay.
'musician' becomes 'bassist' (bass guitarist).
'wanting leader' means to remove the first letter.
'bassist' with its initial letter removed is 'ASSIST'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for assist that I've seen before include "Serve" , "Understand by instinct" , "Provide aid, help out" , "Work as a subordinate" , "providing help?" .)