Main Source was an influential East Coast hip hop group that bridged Toronto and New York City. The group originally featured Toronto producers K-Cut and Sir Scratch alongside New York’s DJ J.O.D and Large Professor. Known for their innovative production and sharp lyricism, they played a key role in 90s hip hop. After Large Professor departed, he was replaced by Queens rapper Mikey D. Main Source is celebrated for their creative beats and contribution to the genre’s golden era.