Coop has performed with a variety of musicians such as Joe Walsh (Eagles), Steve Howe (Yes/Asia), Danny Gatton, Nik West (Prince), Brett Garsed, Jennifer Batten, Seymour Duncan, Pat Travers, Buster B. Jones, Michel Cusson, Alain Caron, Rhonda Smith and Kat Dyson (Prince), Thom Bresh, Andy Timmons, Nik West, Narada Michael Walden, Larry Mitchell, Travis Larsen Band, Gregg Bissonnette, Carmine Appice, Alphonso Johnson, (Santana, Weather Report) Uli Jon Roth, and Yngwie Malmsteen. While touring  Turkey, with drum sensation Dom Famularo and Asim Can (Awesome John), they performed on Istanbul TV for the Sky Network which reached 120 million people in Europe. In Nashville at in 2004, Coop was thrilled to perform for guitar giant Les Paul. Les Paul invited him to come to the Iridium club, where he held court for many years.

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In 2009 at the All Star Guitar Night he performed alongside Tommy Emmanuel, Ben Lacy, Jay Roberts, Danny Gottlieb, and a host of other great players. In 2014 Coop opened for Tower of Power, and later that year for Elvin Bishop and harp legend James Cotton, and in January 2015, it was Coop's second time with Pat Travers. He has also performed with Don Potter over a series of many years, and has produced and performed with Brian & Jenn Johnson, Kim Walker, Chris Quilala, Jeremy & Connie Sinnott, Rob Critchley, Rich Severson, studio guitar legend Mitch Holder, Reggie Coates, Bishop Joseph Arlington, and many others.

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Coop's OTHER project, Marc Cooper & CoopDeVille is Coop’s blues and Jazz passion.  Coop has released 6 recordings, and appeared on numerous recordings throughout his career. His latest CD/DVD set is entitled "Alive & Burning Blues Sessions".  Coop is the author of eight guitar instructional books & CDs.

His latest e-book is entitled, " The Art of Guitar". Two of his guitar books, “Blues Jam Along” and “Hard Rock Jam Along” have been published by Music Sales /Amsco publishing and sold worldwide and 5 other guitar books were published under Music EducatiOn Workshop (MEOW).

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Early in his career, Coop was awarded a quarter finalist award in the prestigious American Song Festival, while living back in Canada, and won 1st place in the Hot Guitarist Contest at the 1994 NAMM show in Anaheim, CA. This contest was open to professional guitarists from all over the world.

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Coop has taught guitar classes at colleges and conferences as far away as China, Singapore, Australia, throughout Europe, North and South America. He himself has studied guitar with Don Mock, Howard Roberts, Mick Goodrick, Steve Morse, Pat Martino, Joe Diorio, Robben Ford, Ron Eschete, Carl Schroeder, Joe Pass, Tommy Tedesco, Steve Trovato, Daniel Gilbert, Keith Wyatt, Howard Alden, Les Wise and a variety of other fine music educators. He's very proud to be one of the earlier graduates of Musicians Institute, going to GIT when it was still above the Hollywood wax museum on Hollywood Blvd.

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Over the years Coop has consulted with, done artist guitar and vocal workshops,  tours, and numerous R&D for these fine companies: Digitech, Godin guitars, Fernandes guitars, TC Electronic, TC Helicon, Roland, Bolt amps, Morpheus pedals, Lexicon, DBX, Fishman (Triple Play guitar synth), AXON Terratec (guitar synth modules AX-100 and AX 50) and for Willcox Acoustic Guitars and basses.

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Coop has officially been endorsing Brian Moore guitars since the early 2000s.  In November 2012 he was honored to have the Brian Moore Marc Cooper signature series C90P.13 USB custom-shop guitar available officially to the public worldwide. As an artist Coop is proudly endorsing  AccuGroove guitar and bass cabs, Brian Moore Guitars, Moollon pedals, and V Picks.