String player and most of orchestra beam (8)
I believe the answer is:
banjoist
'string player' is the definition.
'banjoist' can be an answer for 'player' (I've seen this before). I am not certain of the 'string' bit.
'most of orchestra beam' is the wordplay.
'most of' means to remove the last letter.
'orchestra' becomes 'band' (large musical group).
'beam' becomes 'joist' (joist is a kind of beam).
'band' with its final letter taken off is 'ban'.
'ban'+'joist'='BANJOIST'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for banjoist that I've seen before include "plucky player" , "plucky performer" , "Player of stringed instrument" , "Musician" .)