Musical effect that's a lot more fluttery? (7)
I believe the answer is:
tremolo
'musical effect' is the definition.
(I've seen this before)
'a lot more fluttery?' is the wordplay.
'lot more' can be anagrammed to 'TREMOLO'.
Though, I'm not clear how this is indicated.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for tremolo that I've seen before include "Wavering note" , "Musical wavering effect" , "Unsteady effect" , "Vocal vibrato -- lot more (anag)" , "Paganini's effect" .)