Asian pianist jazzily incorporating covers of alt-rock (9)
I believe the answer is:
pakistani
'asian' is the definition.
(Pakistan is in Asia)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for pakistani that I've seen before include "Eg, native of Islamabad" , "Oriental" , "Asian" , "A Muslim" , "E.g. someone from Islamabad" .)