Optimist
Optimist Music ZA
WeaK OptiMist
提婆達多 & Optimist
Bhut' Rudolph & Optimist Music ZA & System The One
Hip Optimist
Dale Ciceron & Optimistic 4 Christ
Optimisti
Rafko Irgolic & Optimisti
Werner Sellhorn/Jazz Optimisten Berlin
Jazz Optimisten Berlin
Manfred Krug/Jazz Optimisten Berlin
The Optimists Plus Me
Sayfar & Optimistic Music ZA