Schreier made his professional debut in August 1959, playing the role of the First Prisoner in Fidelio by Beethoven. In 1963, he was employed by the Berlin State Opera at Unter den Linden. In 1969, he starred as The Witch in Engelbert Humperdinck's Hansel and Gretel.
- "Leading German tenor Peter Schreier dies at 84". bbc.com. BBC News. 26 December 2019. Retrieved 26 December 2019.