Improvise some pasta (6)
I believe the answer is:
noodle
I believe this clue is a double definition.
'improvise' is the first definition.
(noodle can mean to musically improvise)
'pasta' is the second definition.
(noodle is a kind of pasta)
'some' is the link.
(Other definitions for noodle that I've seen before include "bit of a dish" , "In slang, a foolish person or just the head" , "Head - simpleton - found in soup" , "Ribbon strip of pasta" , "may end up in the soup" .)