The double bass, also called the contrabass or upright bass, is the largest and lowest-pitched bowed string instrument in the modern symphony orchestra. The name, "double bass," derives from the early use of the instrument to double—an octave lower where possible—the bass part written for the cello. It is a standard member of the string section of the symphony orchestra[1] and smaller string ensembles[2] in Western classical music. In addition, it is used in other genres such as jazz, 1950s-style blues and rock and roll, rockabilly/psychobilly, bluegrass, and tango. Template:Infobox Instrument