The Klavierstücke constitute a series of nineteen compositions by German composer Karlheinz Stockhausen.

Karlheinz Stockhausen was a German composer, widely acknowledged by critics as one of the most important but also controversial composers of the 20th and early 21st centuries. He is known for his groundbreaking work in electronic music, having been called the "father of electronic music", for introducing controlled chance into serial composition, and for musical spatialization.