Leroy Eliot "Slam" Stewart (September 21, 1914 – December 10, 1987)[1] was an American
jazz double bass player, whose trademark style was his ability to bow the bass (arco) and simultaneously hum or sing an
octave higher. He was a violinist before switching to bass at the age of 20.
This sample highlights Slam Stewart's style of bowing and simultaneously singing/humming one octave higher. Stewart's solo picks up at the end of a Charlie Parker saxophone solo and leads into a trumpet solo by Dizzy Gillespie.
^Stewart, Slam (Leroy Elliot)Archived 2012-08-31 at the
Wayback Machine, Encyclopedia of Jazz Musicians. Accessed February 4, 2013. "Leroy Elliot Slam Stewart was born on September 21st, 1914 in Englewood, New Jersey. Stewart started his musical journey at age six playing the violin. Claiming he didn't care for the timbre of the violin, Stewart switched to the string bass while attending Dwight Morrow High School."
^"Billboard". Nielsen Business Media, Inc. 26 December 1987. p. 93. Retrieved August 2, 2021 – via Google Books.