Improvise strip of pasta (6)
I believe the answer is:
noodle
This clue is a double definition.
'improvise' is the first definition.
(noodle can mean to musically improvise)
'strip of pasta' is the second definition.
(I've seen this in another clue)
(Other definitions for noodle that I've seen before include "Dope - put in the soup" , "Ribbon strip of pasta" , "Simple person - in the soup?" , "Egg pasta" , "Ribbon-like strip of pasta" .)