Pianist Joanna Lawrynowicz-Just (Rear) plays the piano at one of the regular, free Chopin open-air concerts at the Royal Lazienki Park in Warsaw, Poland, on May 27, 2018. During warm seasons, a professional pianist is invited to give an open-air concert next to the Chopin monument at the Royal Lazienki Park every Sunday. (Xinhua/Jaap Arriens)