Question: Which American pop rock band has worked with Adam Blackstone and originated in Los Angeles, California?

Context paragraphs:
Maroon 5: Maroon 5 is an American pop rock band that originated in Los Angeles, California.  It currently consists of lead vocalist Adam Levine, keyboardist and rhythm guitarist Jesse Carmichael, bassist Mickey Madden, lead guitarist James Valentine, drummer Matt Flynn and keyboardist PJ Morton.

Maroon 5 videography: Maroon 5 (formerly Kara's Flowers) is an American pop rock band that originated in Los Angeles, California.  This is the list of Maroon 5's videography.

The 88: The 88 was an American pop rock band from Los Angeles, California.  The group consisted of Keith Slettedahl (vocals and guitar), Adam Merrin (keyboards and vocals), Anthony Zimmitti (drums and percussion), and Todd O'Keefe (bass and vocals).  Meeting in high school in Calabasas, California, Adam Merrin and Keith Slettedahl formed the band in 2002.  The band's popularity grew from high-profile song placements in video games, films, commercials, and popular TV shows.

Adam Blackstone: Adam Blackstone (born December 4, 1982, in Trenton, NJ) is a multi-instrumentalist, songwriter, producer, and bassist.  He is currently the musical director for Nicki Minaj and Justin Timberlake.  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.

12th Annual Honda Civic Tour: The 12th Annual Honda Civic Tour was a concert tour headlined by American pop rock band Maroon 5, alongside special guest, American pop rock singer Kelly Clarkson.  Sponsored by Honda Motor Company, the tour also featured Rozzi Crane and "The Voice" second season contestant Tony Lucca, as well as American R&B singer PJ Morton as its supporting acts.  With 34 dates, the 12th installment of the tour was the longest, which began on August 1, 2013, in Maryland Heights, Missouri at the Verizon Wireless Amphitheater and ended on October 6, 2013, at the Hollywood Bowl in Los Angeles.

Scotland Yard (band): Scotland Yard is a pop rock group from Los Angeles, California: Scotland Yard began when Chris Hill began demoing songs in 1989 for a female fronted new wave pop group.  In 1991 Kim Cahill responded to an out of date ad for a singer in a local industry trade magazine.  The edgy pop rock sound from the duo would catch an ear in the Los Angeles and Orange county music scene.

Before You Exit: Before You Exit is an American pop rock band originally from Orlando, Florida, now based in Los Angeles, California.  Formed in 2007, the band originally consisted of Connor McDonough, Braiden Wood, and Thomas Silvers.  A year later in 2008, the band also included Connor's younger brother, Riley.  In mid-2012, Toby McDonough joined, and the line-up changed to the three brothers as the face of the band with Braiden and Thomas for live performances.  Braiden later left the band to pursue a solo career.

OneRepublic: OneRepublic is an American pop rock band formed in Colorado Springs, Colorado in 2002 by lead vocalist Ryan Tedder and guitarist Zach Filkins.  It also consists of guitarist Drew Brown, bassist and cellist Brent Kutzle, and drummer Eddie Fisher.  The band first achieved commercial success on Myspace as an unsigned act.  In late 2003, after OneRepublic played shows throughout the Los Angeles area, a number of record labels approached the band with interest, but the band ultimately signed with Velvet Hammer, an imprint of Columbia Records.  They made their first album with producer Greg Wells during the summer and fall of 2005 at his studio, Rocket Carousel, in Culver City, California.  The album was originally scheduled for release on June 6, 2006, but the group was dropped by Columbia two months before the album ever came out.  The lead single of that album, "Apologize", was released on April 30, 2006, on Myspace and received some recognition there, becoming number one on the Myspace charts.

List of Maroon 5 band members: Member list of Maroon 5, an American pop rock band from Los Angeles, California.  The group originally formed in 1994 as Kara's Flowers with a line-up of Adam Levine, Jesse Carmichael, Mickey Madden and Ryan Dusick.

Music Go Music: Music Go Music are an American pop rock band from Los Angeles, California, United States, signed to the independent record label, Secretly Canadian.  The band members use the pseudonyms Torg, Gala Bell, and Kamar Maza, who are David Metcalf, Meredith Metcalf, and Adam Siegel, respectively, of the indie-rock band Bodies of Water.  Their sound has been compared to ABBA and ELO.

Supporting paragraphs: Adam Blackstone Maroon 5
Answer: Maroon 5