Beam from muso Charles (3)
I believe the answer is:
ray
This could be a double definition.
'beam' is the first definition.
(synonyms)
'muso charles' is the second definition.
'Ray' can be an answer for 'charles' (Ray Charles). I'm not certain of the 'muso' bit.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for ray that I've seen before include "A bright beam or flat fish" , "may be electric" , "Beam or flatfish" , "Pencil of light" , "Man who engaged in surrealist photography" .)