Conversation so far:
Who was The Roots original line up?
The Roots' original lineup included Tariq Black Thought Trotter and Ahmir Questlove Thompson.
Where did The Roots meet?
The Roots were classmates at the Philadelphia High School for Creative and Performing Arts.
Who was added to the The Roots members during their original lineup?
As The Roots began to play at school and on local streets, they added bassist Josh The Rubberband Abrams.

Question: Where did they find him
Self-contained rewrite: Where did the Roots find Josh The Rubberband Abrams?