Marcus is a graduate of Dick Grove School of Music in Los Angeles where he studied Recording Engineering and Bass Sight Reading. He initially worked as an assistant engineer at the world famous Cherokee Recording Studios. While there he worked with such artists as Robbie Kreiger of The Doors, Steve Lukather of Toto, John Sykes of Blue Murder, Rita Coolidge, Slaughter, Jeff Pilson of Dokken, Mettalica,Tom Rothrock who produced Beck first album, Mike Frazer who produced Aerosmith's Permanent Vacation, Junkyard & many various jingles. Marcus has played bass for such bands as Crash and Groove, Days of Change, Free Steak Dinner, and Half Past Zero.
Since 2011, Marcus has been the bassist for rock band Hour Eleven. Its self-titled debut cd "Hour Eleven" was released in the spring of 2013. Multi-platinum recording artist Phil Collen (Def Leppard) played guitar and sang background vocals on two of the thirteen tracks on the cd.
Marcus was voted in the top 10 bassist in 2013 by Rockwell Unscene Best Of 2013 magazine .