Idaho is a rock band formed in 1992 in Los Angeles, California, founded as a duo by high school friends Jeff Martin and John K. Berry. The two had played in various bands and projects together since 1981.They were eventually signed to Caroline Records in December 1992 by Brian Long, then released the The Palms EP and Year After Year full-length in 1993. Martin and Berry switched off on drumming duties and shared in the songwritting. Idaho drew frequent comparisons to American Music Club, Red House Painters and Codeine due to vocal, lyrical, and instrumental similarities. Idaho toured the U.S. with similar-minded artists like Red House Painters, Half String, Low, and Cranes in 1993-1995. Dan Seta joined as a multi-instrumentalist on Three Sheets to the Wind, the band's third album, along with Terry Borden - bass (later of the Pete Yorn band) and Mark Lewis (West Indian Girl) on drums. Seta and Lewis had previously been in the band Pet Clarke together, along with Geoff Gans and former Let's Active touring bassist Janine Cooper, who went on to join Downy Mildew. Idaho have played dates in Europe with Lali Puna and Dirty Three

Martin had recorded some solo songs (including "Never Back Again") in 1984 in the U.K., but a solo career never materialized. Idaho's music is traditionally categorized as slowcore or sadcore. The band has released seven full-length albums, as well as numerous EPs and singles, dating back to 1992. Idaho became primarily the vehicle of singer-songwriter Martin, who has performed the most recent of Idaho's albums almost entirely on his own. To this day, he remains the band's sole songwriter and principal musician. His foreboding four-string tenor guitar playing (he has had several such guitars custom-made for him) is a hallmark of most Idaho albums, though later releases rely more heavily on piano. 1998 album Alas featured vocals on a few songs by Melissa Auf der Maur.