Keldorfer, Robert Austrian composer, son of Viktor (Josef) Keldorfer; b. Vienna, Aug. 10, 1901; d. Klagenfurt, Sept. 13, 1980. He received his early musical training from his father, then took courses at the Vienna Academy of Music with Prohaska, Springer, and Stöhr (1917–19). From 1930 to 1939 he was director of the Linz Cons., and from 1941 to 1966 director of the Klagenfurt Cons. Among his works are an opera, Verena (1951); Oboe Concerto (1965); Sonata ritmica for Alto Recorder and Piano (1964); Viola Sonata (1964); Sonata for Recorder and Guitar (1967); choral works; songs.
—Nicolas Slonimsky/Laura Kuhn/Dennis McIntire