A.D.O.R. (born Eddie Castellanos) burst on the rap scene seemingly out of nowhere when he dropped, in the summer of 1992, the infectious Pete Rock-produced single "Let It All Hang Out," an unexpected Top Ten Billboard hit and instant classic. In fact, the rapper did not emerge out of an artistic vacuum, nor was the Pete Rock connection a fortuitous one. Castellanos was born in the Washington Heights section of Manhattan to a professional musician father who would often take his young son along with him during late or all-night jam and recording sessions around New York City. When he was six, his family moved to Mt. Vernon, NY -- later known to hip-hop aficionados as "money-earnin' Mt. Vernon" -- where Castellanos grew up alongside some of rap and R&B's most gifted burgeoning talents. In high school, he rubbed shoulders with, among others, classmates Sean "Puffy" Combs, Heavy D, Al B. Sure, and, of course, Pete Rock, and began to earn a reputation around the neighborhood as an MC. Demo recordings of the newly christened A.D.O.R. (short for, variously, "Another Dimension of Rhythm" or "A Declaration of Revolution") eventually made their way to Uptown Records, and Combs became one of Castellanos' early supporters, personally shopping his music around the industry. Soon thereafter, DJ Eddie F of Heavy D & the Boyz signed him to a production and management deal with Untouchables Entertainment, and he found himself in the studio recording "Let It All Hang Out" for Atlantic Records.