As/Is

As/Is is a live album by John Mayer, released October 19, 2004, available for download from iTunes and also available as a double-CD release. The albums were released from live concert performances across the United States from the tour following the release of Mayer's second album, Heavier Things. The recordings include five albums-worth of material as sold on iTunes. As of July 2009, the four concert-specific albums were still available on iTunes in the United States, though Volume One is no longer available; Each album has its own artwork. A two-disc compilation was released physically and digitally which features the "best" of the iTunes series, plus an additional song, "Inner City Blues (Make Me Wanna Holler)", a Marvin Gaye cover. In "Inner City Blues", Mayer called upon DJ Logic, the support act of the Heavier Things tour, to join him to perform a turntable solo.