Was half asleep when I thought the beginnings sound the same.
I'm surprised out of all the Bad Apple mashups there is, this isn't one of them.
Bad Apple (vocals) by Vocaloid(?):
(Slowed to 0.95x)
Du Hast (music) by Rammstein:
YOU ARE READING
Music That Mashes Well 2
Random2nd part to basically song mashups I think could work