heidi. (ハイジ, read haiji) is a major Japanese angura-kei band who started activities in early 2006.
It's members are 義彦 (Yoshihiko, ex-Sics) on vocals, ナオ (Nao, ex-カリメロ) on guitar, コースケ (Kohsuke, ex-カリメロ) on bass and 桐 (Kiri, ex-kannivalism, ポロリ) on drums. So far, they have released five albums, a best of compilation, one mini-album, and eight singles. OHP: http://heidi-net.com/top.php