You should make Lil Jon & The EastSide Boyz ft. Bun B, Jaddakiss, T.I., Nas & Ice Cube - Grand Finale.
Not old song, from 2004, but sounds Old School. But 1st rate the song if you like it or not, but I believe you should like it.
Characters:
Lil Jon - Luna
Ice Cube - Twilight Sparkle
Rest are your choice.
The EastSide Boyz don't say anything there, they are mixing songs. But as they get credited in the song in my PMVs they are called Equestria Boyz (Or Stallionz?) (They will appear in my Real Pony Roll Call PMV which I will try to finish now and release today or tomorrow.)