Career
Barrett started playing the harmonica at age fourteen. At age sixteen Gary Smith took Barrett as a private student. Smith also introduced Barrett to the local blues jam scene and even invited him to participate is some of the local harmonica blowouts.
At age eighteen Barrett was studying music theory in college (De Anza College in Cupertino, California) and started teaching private harmonica lessons at local music stores and institutes in the California Bay Area.
Since 2002 he has been teaching at his own School of the Blues in San Jose. Since age eighteen Barrett has been teaching blues harmonica lessons.
In 2002 Barrett founded School of the Blues in San Jose, California—the first school for the specific study of blues music Its instructors (Guitar, Bass, Organ/Keyboard/Piano, Vocals, and Drums) teach private lessons and workshops as well as fly-in lessons.
Barrett teaches on average fifty private students a month.
Barrett is also active in working with local hospitals, teaching his Harmonica for Fun & Health classes to people with Chronic obstructive pulmonary disease (Emphysema), asthma and heart disease. David, in conjunction with Doctor Dennis Bucko, developed a harmonica based pulmonary therapy program and book/Civil Defense designed to help people with respiratory problems Barrett is a Grammy Nominated blues harmonica player (for his work on John Lee Hooker, Junior’s album All Odds Against Maine) and performs regularly in the California Bay Area (San Francisco Blues Festival, Monterey Bay Blues Festival, etc) and abroad (Chicago, Germany, etc). Recently he played as a featured artist in the Mark Hummel Blues Harmonica Blowouts, alongside James Cotton, Charlie Musselwhite, Kim Wilson, and Mark Hummel.
Barrett has recorded three albums, Serious Fun, We Are The Blues and the History of the Blues Harmonica Concert.
Barrett has worked or played alongside the following musicians: Charlie Musselwhite, Mark Hummel, Lee Oskar, Rod Piazza, James Cotton, Billy Boy Arnold, Jason Ricci, Paul deLay, Jerry Portnoy, Gary Primich, Howard Levy, Magic Dick, John Mayall, Annie Raines, Paul Oscher, Sam Myers, Snooky Pryor, Rob Paparozzi, Carlos del Junco, Lazy Lester, Kim Wilson, Junior Watson, and Nick Moss.