Term that's musical or legal maybe (7)
I believe the answer is:
allegro
'term that's musical' is the definition.
I know that 'musical' relates to this answer.
'or legal maybe' is the wordplay.
'maybe' indicates anagramming the letters.
'or'+'legal'='orlegal'
'orlegal' is an anagram of 'ALLEGRO'.
Can you help me to learn more?
(Other definitions for allegro that I've seen before include "Fast (mus.)" , "Gaily, lively (music)" , "A fast piece of work" , "Rather fast (music)" , "Scored briskly" .)