Jazz bass

Musical technique; use of the double bass or bass guitar to improvise accompaniment ("comping") basslines and solos in a jazz or jazz fusion style

Jazz bass is the use of the double bass or electric bass guitar to improvise accompaniment ("comping") basslines and solos in a jazz or jazz fusion style. Players began using the double bass in jazz in the 1890s to supply the low-pitched walking basslines that outlined the chord progressions of the songs.