The Saturday, Deutsche Grammophon are putting on the biggest display of global piano talent in memory.
Among those taking part are includes Maria João Pires (officially retired), Rudolf Buchbinder, Evgeny Kissin, Víkingur Ólafsson, Jan Lisiecki, Joep Beving, Simon Ghraichy, Kit Armstrong and Daniil Trifonov.
Others are expected to join, subject to quarantine restictions.
You can watch pianists via YouTube and Facebook using hashtags #StayAtHome and #WorldPianoDay. The show will be streamed live at 3pm Berlin time on 28 March and will be available online only for a short period thereafter.