Related Information for Avett Brothers The Avett Brothers are a non-traditional bluegrass band that originated in Concord, North Carolina. The two brothers, Seth Avett and Scott Avett, formed the group in 2000 after the breakup of the former rock band, Nemo, adding a third member, Bob Crawford. More recently, they have been joined by cellist Joe Kwon. The Avett Brothers combine old-time country, bluegrass, punk, pop melodies, folk, rock and roll, honky tonk and ragtime to produce a sound described by the Washington Post.. read more