Sort of understandable I was walking out of my psychology class and I hear FFX battle music and I looked round and shouted out "Why am I hearing FF 10 battle music?!" then a dude from my class points to his headphones and go "oh thats me." I replied "Oh I thought I was going insane.
I can actually talk more weird times hearing Anime music. I can no longer remember but I recall hearing anime music during a British comedian trolley dash in a supermarket I have forgotten.
Edit: No wait...that was Devo in the super market..... Takeshi's Castle has a bunch of random music such as Dominion Tank Police music.......I am terrible at this.