From Robert Schumann's Carnaval opus 9: "Sphinxes". This consists of three sections of one bar each, with no key, tempo or dynamic indications. The notes are ...
The entire work's playlist: https://www.youtube.com/watch?v=s7KKf81KRqI&list=PLT3ieAbuHmQGE9uStR2L8TTnXfprzEyQD.