Conductor of musical work now popular after upturn (9)
I believe the answer is:
toscanini
'conductor' is the definition.
(Arturo Toscanini)
'of musical work now popular after upturn' is the wordplay.
I cannot really understand how this works, but
'of' could be 'o' and 'o' is found in the answer.
'work' could be 'scan' (scan is a kind of work) and 'scan' is found within the answer.
'popular' could be 'in' ('in' can mean trendy) and 'in' is found within the answer.
The remaining letters 'ti' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for toscanini that I've seen before include "Maestro" , "Arturo --, Italian conductor" , "Music director" , "Bare rock formation" , "Virtuoso conductor" .)