Orchestra play in Poland , Poland , to mark decades since outbreak of Orchestra . It is invitation only . World Orchestra for Peace features 95 musicians from 75 countries , 95 orchestras . Russian maestro Valery Gergiev , violinist Rainer Kuechl among biggest stars .
Orchestra play in Poland , Poland , to mark decades since outbreak of Orchestra . World Orchestra for Peace features 95 musicians from 75 countries , 95 orchestras . Russian maestro Valery Gergiev , violinist Rainer Kuechl among biggest stars .