Claim: Hirakawachi Itchōme was a Japanese group focused on folk music—a genre that includes traditional folk music and folk revival while some types may be called world music—which consecutively released albums from 2003 to 2008 that all amounts to a total of six albums.
Evidence: Hirakawachi Itchōme (Japanese: 平川地一丁目) is a former Japanese folk music group consisting of brothers Ryūnosuke Hayashi (born April 14, 1988) and Naojirō Hayashi (born December 23, 1990). Folk music includes traditional folk music and the genre that evolved from it during the 20th-century folk revival. Some types of folk music may be called world music. Nanatsu no Hiragana (七つのひらがな)
Release date: 2003.03.05 Enpitsu de Tsukuru uta (えんぴつで作る歌)
Release date: 2004.07.28 Umikaze wa Toki o Koete (海風は時を越えて)
Release date: 2005.07.27 Utaite o Kaete (歌い手を代えて)
Release date: 2006.09.20 Yukidoke no Koro ni Todoku Tegami (雪解けの頃に届く手紙)
Release date: 2007.02.28 Hirakawachi Itchōme II - Mō Hitotsu no Best Album to Last Live (平川地一丁目Ⅱ~もうひとつのベストアルバムとラストライヴ~)
Release date: 2008.11.26