Link zum Video: https://www.klavierstimmer.hamburg/app/download/6264510166/Grotrian+mit+Ampico.mp4?t=1621010394

Link zum Foto: https://image.jimcdn.com/app/cms/image/transf/dimension=1920x10000:format=jpg/path/s54f6baca83487a3d/image/i2ba8390a4af22123/version/1621010456/image.jpg