One who makes music? He painted his mother (8)
I believe the answer is:
whistler
This might be a double definition.
'one who makes music?' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'he painted his mother' is the second definition.
(James McNeill Whistler)
Can you help me to learn more?
(Other definitions for whistler that I've seen before include "pretending to be brave in the dark?" , "He used canvas" , "American-born Victorian artist" , "old kettle, say" , "Olympic ski resort" .)