Task: Question Answering
Input (English): Passage: Young's drum performance on Slay Tracks eventually led to him joining Pavement as a full-time member. Young produced the group's 1990 EP Demolition Plot J-7, but displayed hostility toward then-current drummer Jason Fawkes. Fawkes left Pavement in 1991 due to animosity with Malkmus, allowing Young to drum on their third EP, Perfect Sound Forever. Young drummed on all Pavement releases from then on until 1992's Watery, Domestic, after which he was fired for his increasingly erratic behavior and was replaced with Steve West. Young's drumming on Slay Tracks was later recognized as an important turning point in Pavement's history, and was considered to be "the opportunity of a lifetime" by C. Harris-Nystrom of the News & Review.Dan Koretzky, founder of Drag City, ordered 200 copies of the EP for the Chicago Reckless Records store he worked for at the time. Koretzky asked Kannberg if he would sign to Drag City during the same phone call that he ordered the EP. Kannberg remembered expressing reluctance to sign to any label, but Drag City producer and session musician Rian Murphy recalled that "We asked, they said yes. Lives didn't seem to be on the line." Chris Lombardi and Gerard Cosloy of Matador Records also first heard of Pavement after Kannberg sent a copy of Slay Tracks to their zine, Conflict. Matador signed Pavement in 1992 for the release of their debut studio album, Slanted and Enchanted.
The songs on Slay Tracks are all included on the 1993 compilation Westing (By Musket and Sextant), along with several of Pavement's other early material. Westing has sold 63,000 copies, and was praised by Robert Christgau and Stephen Thomas Erlewine for making songs previously found exclusively on vinyl available on compact disc. All of the songs from Slay Tracks were played live throughout Pavement's history, with "Box Elder" particularly cited as an "old favorite" for fans at concerts. Live performances of "Box Elder" has also been included on the compilation reissues Slanted and Enchanted: Luxe & Reduxe and Wowee Zowee: Sordid Sentinels Edition, with the version on the latter beginning with a short jam session. In a 1999 retrospective of the band's career, Donna Freydkin of CNN.com called  Slay Tracks "a quick underground favorite", while John Hicks of the Planet Weekly wrote "Although Pavement was conceived as a studio-only project, the underground success of Slay Tracks ensured that it was only a matter of time before the group became a full-fledged performing entity.". 
Question: What event allowed Young to drum on Pavement's third EP?
Output (English): Fawkes left Pavement.