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Creator of the vertical piano "470i" David Klavins tests the piano in Ventspils, Latvia, Aug. 4, 2019. Pianists must climb a steep flight of steel stairs to a balcony to play the vertical piano "470i". (Photo by Janis/Xinhua)
Creator of the vertical piano "470i" David Klavins tests the piano in Ventspils, Latvia, Aug. 4, 2019. Pianists must climb a steep flight of steel stairs to a balcony to play the vertical piano "470i". (Photo by Janis/Xinhua)