Keith Moore "Red" Mitchell was an American jazz double-bassist, composer, lyricist, and poet.
Rune Gustafsson, Red Mitchell, and Egil "Bop" Johansen, Down Town jazz club, Oslo, 1972
The double bass, also known as the upright bass, the acoustic bass, or simply the bass, is the largest and lowest-pitched chordophone in the modern symphony orchestra. Similar in structure to the cello, it has four or five strings.
Side and front views of a modern double bass with a French-style bow
Jazz bassist Ron Carter at Altes Pfandhaus in Cologne
Ellen Andrea Wang performing at the Oslo Jazz Festival
Double bass is a standard instrument in bluegrass groups.