The Grand Finale!(Final Boss theme from Bowser Inside Story).Good god, that music is divine.Yoko Shimomura is a genius!
https://www.youtube.com/watch?v=xe-8eaTZcFQ
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1