 That year , Chisholm revived the South African College of Music where he eventually would teach composer <unk> <unk> and singer Désirée Talbot . Using Edinburgh University as his model , Chisholm appointed new staff , extended the number of courses , and introduced new degrees and diplomas . In order to encourage budding South African musicians he founded the South African National Music Press in 1948 . With the assistance of the Italian baritone Gregorio <unk> , Chisholm also established the college 's opera company in 1951 and opera school in 1954 . In addition , Chisholm founded the South African section of the International Society for Contemporary Music ( <unk> ) in 1948 , assisted in the founding of the <unk> Open @-@ Air Theatre on 1 December 1950 , and pursued an international conducting career . 
