Which American pop rock band has worked with Adam Blackstone and originated in Los Angeles, California?
Adam Blackstone:  Adam has also directed and played in performances with a star-studded list of cliental that includes Jay-Z, Kanye West, Eminem, Janet Jackson, Dr. Dre,The Jonas Brothers, The Roots, Ms.Marilyn Marshall, Al Green, The Isley Brothers , Angie Stone, Mike Posner, Steve Tirpak, Al Jarreau, Maroon 5, Demi Lovato, and Jill Scott. Maroon 5: Maroon 5 is an American pop rock band that originated in Los Angeles, California.
Maroon 5