Old doctor spurning new instruments (5)
I believe the answer is:
oboes
'new instruments' is the definition.
'oboes' can be an answer for 'instruments' (I've seen this before). I'm not sure about the 'new' bit.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for oboes that I've seen before include "Woodwind instruments" , "Reed instruments" , "Parts of orchestra" , "members of orchestra" , "noted producers" .)