On this day in music history: September 24, 1991 - “The Low End Theory”, the second album by A Tribe Called Quest is released. Produced by A Tribe Called Quest, Skeff Anselm, and Pete Rock it is recorded at Battery Studios, Greene Street Studios, Soundtrack Studios and Jazzy Jay Studio in New York City from Late 1990 - Mid 1991. Issued as the follow up to the New York based rap group’s acclaimed debut “People’s Instinctive Travels and the Paths of Rhythm”, the group make a conscious effort to surpass what they have done both musically and lyrically on their debut. Prior to its recording, original member Jarobi White leaves the group to pursue other interests. The groundbreaking Hip Hop album fuses jazz and R&B samples, creating a more stripped down and laid back sound, but maintaining a street oriented edge.The album also features guest appearances from jazz bassist Ron Carter, Busta Rhymes, Charlie Brown and Dinco D. of Leaders Of The New School, Lord Jamar and Sadat X from Brand Nubian, Diamond D, and vocalist Vinia Mojica. Universally praised within and outside the Hip Hop community upon its release, it goes on to become one of the most influential rap albums of all time. It spins off three singles including “Check The Rhime” (#1 Rap) and “Scenario” (#6 Rap). “The Low End Theory” peaks at number thirteen on the Billboard R&B album chart, number fifty eight on the Top 200, and is certified Platinum in the US by the RIAA.