Conversation so far:
Who were members of the Roots?
The Roots' original lineup included Tariq Black Thought Trotter and Ahmir Questlove Thompson.
What were the Roots known for?
The Roots are known for a jazzy and eclectic approach to hip-hop featuring live musical instruments.
Are there any other interesting aspects about the article about the Roots besides their members and what they were known for?
The Roots currently serve as the house band on NBC's The Tonight Show Starring Jimmy Fallon.
What was the Roots' hottest song?
Clones was the Roots' first single to reach the top five on the rap charts.
Did the Roots release an album?
Organix is the debut studio album of American hip hop band The Roots, released on May 19, 1993 by the band, independently.
What else were the Roots known for besides their debut album Organix?
Several members of the Roots, including longtime member Malik B., left the group.

Question: When did he leave?
Self-contained rewrite: When did Malik B. leave the Roots?