100 years ago today, music's first twelve-note work (as opposed to containing some twelve-note writing), Schoenberg's Suite, op.25, was premiered by Eduard Steuermann in Vienna, in the Konzerthaus's Mozart-Saal. Here is the first movement, played by Maurizio Pollini. https://www.youtube.com/watch?v=fy6t8yXPcSQ@classicalmusic