Unlimited tone

Unlimited tone is a Japanese music group formed in Japan in August 2007. It was established by Dody, Luz, TAC, and iri. TAC left in 2008, iri left in 2012, and Ryohei joined in 2014. The group is currently active as a compact duo centered on 土居康宏 and Ryohei. The group has described its concept as the layering of voices, and its name refers to the broad resonance created when those voices overlap. Its official website is https://unlimitedtone.site/. In anime music, Unlimited tone performed "Utatane Sunshine (うたたねサンシャイン)," the opening theme for "Tanaka-kun wa Itsumo Kedaruge".