Liveliness, vigour (9)
I believe this clue is a double definition.
'liveliness' is the first definition.
(synonyms)
'vigour' is the second definition.
(animation can mean vigour or vitality)
(Other definitions for animation that I've seen before include "Liveliness - illusion of movement in cartoon films" , "Liveliness and vigour" , "Vigour; film technique" , "Cartoon-making art" , "Making of cartoons" .)
I believe this clue is a double definition.
'liveliness' is the first definition.
(I've seen this in another clue)
'vigour' is the second definition.
(I've seen this before)
(Other definitions for brio that I've seen before include "(Of music) spirit" , "Vivacity - spirit" , "Spiritedness" , "In music, con ..... means with dash and verve" , "Vivacity of style" .)