Orin O’Brien was born in Hollywood to parents in the film industry, George O’Brien and Marguerite Churchill, and received her early musical training in Los Angeles, where she studied with Milton Kestenbaum and Herman Reinshagen. She then studied in New York with Frederick Zimmermann and graduated from The Juilliard School. She has been a member of the New York Philharmonic since 1966, where she has played with the world’s leading conductors. She has participated in numerous chamber music festivals, including Marlboro, and in first performances of the Gunther Schuller Quartet for Four Double Basses. She co-chaired the double bass department of The Juilliard School for ten years, and currently serves on the faculties of the Manhattan School of Music and Mannes College of Music. Her most recent chamber music performances were the quintets of Schubert and Dvorak with the Guarneri String Quartet.