butasaku is an ambient R&B unit with lyrics and vocals by singer-songwriter butaji, who has been expanding their activities in recent years to include the production of theme songs for TV dramas, and tracks by Yusaku Arai, a musician who is active in the fields of film and theater and specializes in the depiction of unique spaces. This is an ambient R&B unit. They are an artist who leads the next mode of music by further refining the recent trends of environmental music and city pop. Their first album "forms" is the missing link between R&B and music concretes. An explosion of quiet emotions utilizing the different characteristics of each, doubting symbols and crossing boundaries, and the richness contained in these cross-border expressions. The music of butasaku, where conflicting feelings can coexist in one place, certainly seems to be a sign of good things to come. The universality of the two musicians' music, which refuses to be labeled, has an inherent nostalgia for the future that evokes even memories that never existed. The album was mastered by Fumitake Tamura, and all artwork was photographed by Ichisei Hiramatsu and designed by Hiromi Fujita.