There are quite a few death metal parody videos out there. I don't know what it is about seeing a classic and well-known know song get a death metal makeover, you just want to watch it!

This time around "Mary Poppins" ear worm of a song “Supercalifragilisticexpialidocious” gets the death metal treatment. 

Youtuber Andy Rehfeldt's clip features both male and female death metal vocals, with Rehfeldt playing the instruments.

For more of his other work, which includes Marlilyn Manson's "The Beautiful People" done Polka-style (watch below) , check out his YouTube channel.