After playing with the Chicago Symphony Orchestra, David moved to the Detroit Symphony where he was principal horn. During his time in Detroit, he was a founding member of the rock group, “Symphonic Metamorphosis”, had an interesting recording experience with Marvin Gay, and continued his interesting relationship with Arthur Fielder. He then won his dream job with the San Fransisco Symphony and worked with music directors Seiji Ozawa, Edo de Waart, Herbert Blomstedt, and Michael Tilson Thomas.