Disney film buff takes time on continent (8)
I believe the answer is:
'disney film' is the definition.
'buff takes time on continent' is the wordplay.
'buff' becomes 'fan' (eg a film buff is a film fan).
'takes time' becomes 't' (I've seen this in other clues).
'on' means one lot of letters go next to another.
'continent' becomes 'asia' (Asia is an example).
(Other definitions for fantasia that I've seen before include "Disney's 1940 masterpiece" , "Musical composition of several familiar tunes" , "animated film" , "free-form composition" , "Florid and fanciful composition" .)