We're featuring practice tapes from the hugely influential double bass performer and pedagogue Frederick Zimmermann on this week's Contrabass Conversations episode. Co-host John Grillo unearthed and transferred these tapes of Zimmermann practicing, and he and I briefly chat about how these tapes helped to shape John's concept of sound on the double bass. Enjoy!

About Frederick Zimmermann:

Frederick Zimmermann was an American double bassist and teacher. He played in the New York Philharmonic from 1930-1966 serving as assistant-principal and principal and taught at the Juilliard School, Mannes College of Music, Columbia University, Manhattan School of Music, and New York University. He is considered by many to be the most influential American double bass teacher of the 20th century.