Roy Hart

Roy Hart (born Rubin Hartstein; 30 October 1926 – 18 May 1975) was a South African actor and vocalist noted for his highly flexible voice and extensive vocal range that resulted from training in the extended vocal technique developed and taught by the German singing teacher Alfred Wolfsohn at the Alfred Wolfsohn Voice Research Centre in London between 1943 and 1962.

Roy Hart

Roy Hart (born Rubin Hartstein; 30 October 1926 – 18 May 1975) was a South African actor and vocalist noted for his highly flexible voice and extensive vocal range that resulted from training in the extended vocal technique developed and taught by the German singing teacher Alfred Wolfsohn at the Alfred Wolfsohn Voice Research Centre in London between 1943 and 1962.