Hybrid Theory was the debut EP by Hybrid Theory, recorded and released in May 1999 (see 1999 in music), in a limited edition of one thousand.[citation needed] Later that year, the band changed its name to Linkin Park and signed to Warner Bros. Records. Hybrid Theory was re-mixed and remastered for another limited release in 2001, with minor changes in the credits and artwork, for members of Linkin Park's fan club.