GROUP Tamashii is a Japanese music group formed in 1995. The ensemble brings together Sadawo Abe, Kankurō Kudō, Seminosuke Murasugi, Sarutoki Minagawa, Ryūichi Kozono, Hiroki Miyake, and Taku Tomizawa, and it is associated with Kioon Music. Its official website is g-tamashii.com, which serves as the clearest reference point for the group's catalog and live activity.
As a collective project, GROUP Tamashii is best followed through its credited releases and stage appearances under the GROUP Tamashii name. In June 2025, the group announced the one-man live show, "Haneda de Tampatsu no Baito," drawing renewed attention after about a year and confirming that the project remained active. The combination of a long-running lineup, a clearly attributed label connection, and a public official site makes the group's activity easy to trace for listeners looking up Japanese ensemble acts.
