of a technique pioneered by RZA; Kanye has since revealed that the beats he and fellow Roc producer Just Blaze produced were originally created for Ghostface Killah, before announcing that Ghostface inspired his sound and style. During the recording sessions for West's 2004 debut The College Dropout, then-Roc-A-Fella artist Ol' Dirty Bastard recorded a chorus and backing vocals for the song "Keep the Receipt", which was left off the album but released on a mixtape. In 2006, Kanye was featured on the remix to Ghostface Killah's hit single, "Back Like That". In 2010, West and Raekwon collaborated again on the Kanye-produced remix to Justin Bieber's single "Runaway Love". The beat, produced by West, playfully utilized elements from "Wu Tang Clan Ain't Nuthing ta Fuck Wit". Following up on the song, Raekwon guested on several tracks cut from West's My Beautiful Dark Twisted Fantasy, which were released as songs in the producer's weekly G.O.O.D. Fridays series. On the album's release, Raekwon was featured on the track "Gorgeous" alongside West and Kid Cudi; in addition, RZA co-produced the song "Dark Fantasy" with West and producer No I.D., and appeared on the song "So Appalled" alongside Jay-Z, Pusha T and CyHi da Prince. RZA also produced the song "New Day" with West off the Kanye West & Jay-Z's collaborative effort Watch the Throne. More recently, both Raekwon and Ghostface Killah were featured on the G.O.O.D. Music compilation album, Cruel Summer. In 2012, he and RZA collaborated on the track "White Dress" for the soundtrack for The Man with the Iron Fists. DJ Muggs West Coast producer and Cypress Hill co-founder DJ Muggs began collaborating with the Wu-Tang in 1995, when RZA and U-God appeared on the RZA-produced Cypress Hill song "Killa Hill Niggas" from the album III: Temples of Boom. In 1997, Muggs produced the Method Man/Prodigy collaboration "Bulworth". In addition, RZA and GZA appeared on his album Soul Assassins I, and GZA appeared on the 2000 followup, Soul Assassins II. In return, Muggs produced a song on GZA's 2002 album Legend of the Liquid Sword, which led to Muggs and GZA recording the 2005 joint album Grandmasters. That same year Muggs produced the song "Black Opera" for Skillz, which featured Raekwon. Additionally, GZA appeared on the DJ Muggs-produced Planet Asia album Pain Language in 2008. In 2009, Raekwon spoke about recording new material with DJ Muggs, presumably for his album Cuban Linx