


James Yancey was the second oldest of four children including an older brother (Earl), a younger sister and a younger brother, Johnny, also a rapper/producer known as Illa J. The family lived in a house situated near McDougall and East Nevada, off E. 7 Mile in Detroit. He developed a vast musical knowledge from his parents (his mother is a former opera singer and his father was a jazz bassist). According to his mother, he could "match pitch perfect harmony" by "two-months old", to the amazement of musician friends and relatives. He began collecting vinyl at the age of two and would be allowed to spin records in the park, an activity he enjoyed tremendously as a child.
Along with a wide range of musical genres, Yancey developed a passion for hip hop music and formed a rap group called Slum Village with schoolmates T3 (R.L. Altman), and Baatin (Titus Glover) at Pershing High School. He had also taken up beatmaking, using a simple tapedeck as the center of his studio. During these teenage years he "stayed in the basement alone" with his ever-growing collection of records, perfecting his craft. He later told Pete Rock when they met years later that "I was trying to be you."

Yancey's career began slowly. He has now become highly regarded, most notably for the production of critically acclaimed albums by Common, Busta Rhymes, A Tribe Called Quest, and The Pharcyde. He was a member of Slum Village for their acclaimed debut album Fantastic, Vol. 2.
In the early 2000s, Yancey's career as a solo artist began to improve; A solo album Welcome 2 Detroit was followed by a collaborative album with California producer Madlib, Champion Sound, which catalyzed the careers of both artists. Just as his music was becoming increasingly popular, Yancey died in 2006 of the blood disease TTP.