Bertram Turetzky

Bertram Jay[1] Turetzky (born February 14, 1933) is a contemporary American double bass (contrabass) soloist, composer,[1][2] teacher, and author of The Contemporary Contrabass (1974, 1989), a book that looked at a number of new and interesting ways of playing the double bass including featuring it as a solo performance vehicle with no other instrumental accompaniment.