Piano Day is an official body created in 2015 by Berlin-based composer Nils Frahm and his closest friends to house various exciting, piano-related projects for everyone to participate in. The first project revealed by the Piano Day team in 2015 was the building of what will be the world’s tallest piano: the Klavins 450, designed by piano builder David Klavins who also created Nils’s upright stage piano, the Una Corda. With over 70 per cent of the 120.000 euro target reached, the piano building is already underway and fans can continue to donate via www.pianoday.org. It was on the 3.7 meters high Klavins M370 that Nils recorded eight improvised piano motifs in one sitting, which formed his 2015 album, Solo.