Nils Frahm reveals new 'Solo' album and the 'Klavins 450' piano project on the world's first Piano Day! Berlin-based composer Nils Frahm has fast become know as a prolific performer and recording artist with the piano at the core. Piano Day is an official body created by Nils and his closest friends, and will house various exciting, piano-related projects. The first project revealed by the Piano Day team is the building of what will be world's tallest piano: the Klavins 450. As the life-long dream of David Klavins, it even exceeds the currently largest upright piano there is, the Klavins M370. Situated in Germany, Tubingen, 1.8 tons in weight, 3.7 meters high, its longest strings are about 10 feet in length. And it was on this piano that Nils recorded eight improvised piano motifs in one sitting, which form his new 'Solo' album. Once recorded, Nils began to think of ways to release the album as a gift to his fans, similarly to his 2012 release 'Screws', and that's when Nils came up with the idea of Piano Day.