I just realized... That the music in the mini game where you try to keep the Bom-Omb away from the mini fireballs and the Bowser statues fire has the song you hear in every Bowser Castle level from the original Super Mario Bros for the Nintendo entertainment system mixed into it listen to it!: 1:46
I loved luigi's casino as a kid. It was the closest thing i could get to a real casino. I enjoyed seeing the worker toads doing their own thing in the backround.