The most influential MC-and-DJ tandem of the 1990s, Gang Starr set new standards for East Coast rap with a pair of early-'90s touchstones, Step in the Arena (1991) and Daily Operation (1992), whose appeal has only grown over the decades. Beginning with these classic releases, both listeners and critics heaped mounds of praise upon Guru and DJ Premier -- the former because of his socially conscious lyrics and no-nonsense stance, the latter because of his DJ-style beat-making and jazzy sound. Following Step in the Arena and Daily Operation, Premier became one of New York's most demanded producers, crafting hits for the city's finest MCs, including the Notorious B.I.G., Nas, Jay-Z, and KRS-One. Guru likewise collaborated with plenty of well-known artists -- Roy Ayers, Donald Byrd, N'Dea Davenport -- on his solo debut, Jazzmatazz, Vol. 1 (1993), and its series of follow-ups. Following Hard to Earn (1994) -- the duo's fourth Gang Starr collaboration overall -- Guru and Premier began focusing primarily on their solo projects, reuniting infrequently -- too infrequently, many fans felt -- for albums such as Moment of Truth (1998) and The Ownerz (2003). During this period of solo activity, Gang Starr became increasingly recognized as a touchstone, one that critics and hip-hop purists frequently cited as a standard-bearer for streetwise, socially conscious East Coast rap.