I like it

Stolen MIDI?

As another reviewer noted, this appears to simply be a MIDI file with a piano soundfont attached.

Mine'll probably be better. xD

It's hard for me to say this because I suck. xD But yeah, mine will most likely be better due to my use of INSTRUMENT VARIATION and DRUMS.

teach me!

teach me how to play that!

What?

This sounds awfully like The Piano-only Waluigi pinball MIDI of Waluigi pinball (Found here: http://members.home.nl/nintendosheetmusic/m/mariokartds/wal
uigis_pinball.mid)

It looks like you've only snagged the Midi into your utility and changed the tempo.. That's bad man. Originality is your friend.

[Correct me If I'm mistaken.]