David Auerbach is a Colorado MahlerFest board member and former board president. His degree is in Mathematics with a strong minor in music. Until 2009, he worked in the computer and telecommunications industry; most recently developing international standards and architectures for voice over IP. He holds multiple patents in key internet voice technologies.

In high school, David discovered a Bruno Walter recording of the Mahler 2nd. Of all those found in that library, it was with this recording that he most connected. Since then, he has explored and studied all categories of classical music including 20th century music.

While on a two-year assignment in France, David discovered the on-line world of Mahler. It was through this connection that he learned about the Colorado MahlerFest and began his cherished friendship with Stan Ruttenberg. His association with MahlerFest began in 2003 and progressed from attendee to volunteer to board member (starting in 2009) to board president.  David stepped down as president in 2018 due to a temporary move to Massachusetts.

David is an amateur naturalist and was a docent at Big Basin Redwood State Park in California where he led hikes and taught plant identification, fire ecology and geology.