Fast scoring rate? (7)
I believe the answer is:
allegro
'fast' is the definition.
(similar in meaning)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for allegro that I've seen before include "(In music) briskly" , "At a brisk speed (music)" , "In quick time" , "Quick (of a score)" , "Lively, quick (mus.)" .)