Even Classical music non-fans might find these interesting. Mesmerizing to watch. Full-screen mode recommended.
A few samples ...
Stravinsky's Rite of Spring:
https://www.youtube.com/watch?v=02tkp6eeh40
Debussy's Claire de Lune, arranged for guitar:
https://www.youtube.com/watch?v=fTJbLei7A2c
More Debussy
https://www.youtube.com/watch?v=Yt1jfX5C1u0