Gertz is known for his superb mastery of the upright bass and was named “Outstanding Bassist” by the Boston Music Awards.

Gertz has performed and recorded with such artists as Gary Burton, Jerry Bergonzi, John Abercrombie, Joey Calderazzo, Kenny Werner, Mick Goodrick, Kurt Rosenwinkel, Billy Hart, Bill Frisell, Bob Berg, George Cables, Gil Evans, Tom Harrell, Jon Hendricks, Diane Schuur, Dave Brubeck, George Garzone, Mike Stern, Larry Coryell, Joe Lovano, Cab Calloway, Maynard Ferguson, Count Basie and many others.