- John Tyrrell
(b Brno, June 30, 1898; d Brno, Nov 30, 1979). Czech musicologist and folklorist . He studied with Helfert at Brno University (1921–6), taking the doctorate with a dissertation on Rieger. Until 1928 he worked under Helfert in the music section of the Moravian Museum; he then became head of the music division of Brno Radio (...