Isotope 217 is an experimental music group formed in the late 1990s, known for its unique blend of jazz, electronic, and avant-garde influences. The group emerged from the Chicago music scene and consists of members who have affiliations with other notable acts such as Tortoise. Isotope 217’s sound is characterized by complex rhythms, intricate instrumental arrangements, and a willingness to explore diverse musical styles. They have released several albums, contributing to the evolution of post-rock and jazz fusion genres, and are recognized for their innovative approach to music-making.