A 3D Christmas Bauble animated by BBC BASIC for SDL 2.0. The music is 'Prepare Thyself, Zion' from J.S.Bach's Christmas Oratorio; it was transcribed for Z80 Music by Gerald Pye on 27th September 1981.
You can run the program in your own browser by clicking here; it is best viewed Fullscreen. You may need to click on the screen to start the music playing.