Keller Williams (born February 4, 1970) is an American musician from Fredericksburg, Virginia, who began performing in the early 1990s. He is also known by the name K-Dub when performing. Williams' music combines elements of bluegrass, folk, alternative rock, reggae, electronica/dance, jazz, funk, and other assorted genres. He is often described as a 'one-man jam-band' due to his frequent use of live phrase looping with multiple instruments.
Though primarily a solo artist, Williams has toured with several bands that include Larry Keel and Natural Bridge, Yonder Mountain String Band, The String Cheese Incident, Umphrey's McGee and Ratdog, and has frequently performed at The Bonnaroo Music and Arts Festival, the AllGood Music Festival, Summer Camp Music Festival, the The Rothbury Festival, and the Elysian Fields Music Festival.
Source: http://en.wikipedia.org/wiki/Keller_Williams