Ingratiatingly polite learner amongst musicians (5)
I believe the answer is:
bland
'ingratiatingly polite' is the definition.
I can't judge whether this defines the answer.
'learner amongst musicians' is the wordplay.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'amongst' means one lot of letters goes inside another (I've seen this in other clues).
'musicians' becomes 'band' (group of musicians).
'l' placed into 'band' is 'BLAND'.
Can you help me to learn more?
(Other definitions for bland that I've seen before include "Mild; dull" , "Boring" , "Insipid, vapid" , "Insipid, banal" , "Dull - tasteless" .)