Draw out note that is legal (6)
I believe the answer is:
elicit
'draw out' is the definition.
(I know that draw out can be written as elicit)
'note that is legal' is the wordplay.
'note' becomes 'e' (musical note).
'that is legal' becomes 'licit' (similar in meaning).
'e'+'licit'='ELICIT'
(Other definitions for elicit that I've seen before include "Get out" , "Evoke (a response)" , "Bring something out into the open" , "Extract" , "Draw out, say a response" .)