Jeffrey Allen Ament (born March 10, 1963) is an American musician and songwriter who serves as the bassist for the American rock band
Pearl Jam. Along with
Stone Gossard,
Mike McCready, and
Eddie Vedder, he is one of the founding members of Pearl Jam. Ament is also known for his work prior to Pearl Jam with the 1980s
Seattle-based
grunge rock bands
Green River and
Mother Love Bone, and is particularly notable for his work with the
fretless bass,
upright bass, and twelve-string bass guitar. Ament is also a member of the bands
Three Fish, Tres Mts., and
RNDM. In 2008, Ament released his first solo album,
Tone. A second solo album,
While My Heart Beats, followed in 2012.