Attribution for these astonishing works has been lost in the compilation process. First, international currency symbols by Diem Chau. Second, crayons carved into the 12 symbols of the Chinese zodiac, also by Diem Chau.
update: I tried with all my songs and yes I know it doesn't work with every song. I just think it works if you play the song on time or it works with some sort of upbeat song. But yea, it doesn't work perfectly like you would expect.