The Hybrid Theory EP has fetched several hundred dollars, from auctions on Web sites like eBay. They compiled this before they changed there name to Linkin Park. This album was not released to the public, it was a collection of early recordings of song that made it on Hybrid Theory and some re-recordings of songs on the the original EP. On it there are eight tracks some are working titles for "In The End", "By Myself", "Forgotten", and a couple re-recordings of "Carousel", "Part of Me", and "And One". There is a little known about second album, it is a Demo CD, self titled Hybrid Theory Demo. The first 500 copies of the CD were individually signed by all six members of the band. The first fan club package was shipped to members and included a re-mixed and re-mastered edition of Hybrid Theory EP, with edited inlay artwork, including a note from the band. On November 19, 2001, Linkin Park Underground, Linkin Park's exclusive fan club, was opened. The remaining copies of the EP were sent to the first members of Linkin Park's newly-formed street team. Only one thousand copies were pressed, and the EP was sent to various record labels, including Warner Bros. At the time, the band's name was Hybrid Theory (they were previously called Xero the band changed name later in 1999, after Chester Bennington joined them, replacing Mark Wakefield).