There are some DJs on Youtube and the music world that takes popular songs, add out-of-sync lyrics on top of them and pitch up songs. Afterward, they steal the credits of the songs and claim them as their own by renaming them without stating the original artist. The most notable of these "DJ"s are DJ Rankin and DJ Cammy, who, unfortunately, got a lot of fanboys on the Internet who worship them.
The following song is pretty much a parody of two of these DJs:
More info about those DJs: