Otakar Ma ák (5 January 1872 Esztergom, modern day Hungary 2 July 1939 Prague) was a tenor Czech opera singer, and a nephew of Julius Ma ák who perfected his vocal skills at Prague s School of Applied Arts as well as at the Czech Academy of Arts. At the same time he studied singing privately. Ma ák made his debut in the title role of Charles Gounod s opera Faust on 1 February 1899 in Brno, Czech Republic. In the same year he was engaged by the National Theatre in Prague. From 1901, he performed abroad. He was a regular member of the National Theatre between 1899 1901 and again in 1903 1907. Thereafter he sang on this first Czech stage as a permanent guest.