![A detail of the mechanic of an old upright piano, with the levers (fly, jack, underhammer and shank) to move the string hammers Stock Photo - Alamy A detail of the mechanic of an old upright piano, with the levers (fly, jack, underhammer and shank) to move the string hammers Stock Photo - Alamy](https://l450v.alamy.com/450v/2ece14t/open-upright-piano-piano-action-close-up-german-piano-action-internal-mechanism-piano-tuning-repair-and-maintenance-hammers-2ece14t.jpg)
A detail of the mechanic of an old upright piano, with the levers (fly, jack, underhammer and shank) to move the string hammers Stock Photo - Alamy
![A young man plays on the grand piano on the Königstraße in Stuttgart, Germany, 02 June 2017, Stock Photo, Picture And Rights Managed Image. Pic. PAH-170602-99-696904-DPAI | agefotostock A young man plays on the grand piano on the Königstraße in Stuttgart, Germany, 02 June 2017, Stock Photo, Picture And Rights Managed Image. Pic. PAH-170602-99-696904-DPAI | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/38d9bf4a7e05290d5c2899d3ce09a347/pah-170602-99-696904-dpai.jpg)
A young man plays on the grand piano on the Königstraße in Stuttgart, Germany, 02 June 2017, Stock Photo, Picture And Rights Managed Image. Pic. PAH-170602-99-696904-DPAI | agefotostock
![A young man plays on the grand piano on the Königstraße in Stuttgart, Germany, 02 June 2017, Stock Photo, Picture And Rights Managed Image. Pic. PAH-170602-99-696904-DPAI | agefotostock A young man plays on the grand piano on the Königstraße in Stuttgart, Germany, 02 June 2017, Stock Photo, Picture And Rights Managed Image. Pic. PAH-170602-99-696904-DPAI | agefotostock](https://t1.thpservices.com/previewimage/gallil/5ea2f8490f3a3f742b39230f5aa2b0fa/pah-170602-99-696912-dpai.jpg)