Friedrich Gulda From Wikipedia

Friedrich Gulda (16 May 1930 – 27 January 2000) was an Austrian pianist and composer who worked in both the classical and jazz fields.

Born in Vienna the son of a teacher, Gulda began learning to play the piano from Felix Pazofsky at the Wiener Volkskonservatorium, aged 7. In 1942, he entered the Vienna Music Academy, where he studied piano and musical theory under Bruno Seidlhofer and Joseph Marx.

During World War II as teenagers, Gulda and his friend Joe Zawinul would go out and perform forbidden musics – like jazz, in violation of the government’s prohibition on the playing of such music.