Marshall has the distinction of being a Maple Blues Award and Canadian Independent Music Award nominee.

Marshall has been described as a Neo-Delta visionary (Living Blues), has been compared to Woody Guthrie (Living Blues), Rory Gallagher (Rock Radio Magazine), Taj Mahal, Roy Bookbinder and Corey Harris (Rootstime) and to Johnny Winter and Kim Mitchell (Music Reviews by the Rock Doctor). 
 
He has also co-produced and released “Where’s the Party” (2003), “The Morning After” (2008), “Blues Intervention” (2010), “House Call” (2013), and Feeling Fine (2018) to wide critical acclaim. His albums have charted in the Top 10 on Canada's Roots Music Report - for radio play, in the Top 10 on Roots Music Report - Roots Blues & Blues Rock – Top 50 Blues (International) - for radio play, in the Top 10 on Roots Music Report - Roots Blues – Top 50 Blues Rock (International) - for radio play, in the Top 10 on Roots Music Report - Roots Blues – Top 50 Blues Internet Radio Airplay Chart, and #12 on Australian International Blues Airplay Chart.

Marshall has also produced and released 13 episodes of the WEB series “Why I Love The Blues” asking blues musicians, fans, and movers & shakers why they love the blues. To date, the series has received over 12,000 views.