There are seven bands with the same name: 1. Japanese J-Pop group "Sphere" 2. Norwegian Cyber/Modern Metal band "Sphere" Sphere (NO) 3. Polish Death Metal band "Sphere" 4. American Jazz Quartet "Sphere" 5. Czech Metalcore band "Sphere" 6. A female trip-hop singer 7. A Japanese shoegaze band 8. American Jazz Quintet from Detroit "Sphere" 1. Sphere (スフィア) is a Japanese pop idol unit formed by four voice actresses affiliated with Music Ray'n.