Roman Panchenko, from Chernihiv, performs in Castle Square in Warsaw, Poland, on Tuesday. Adam Lach for NPR hide caption toggle caption Adam Lach for NPR Europe This musician helps homesick Ukrainians feel a little more at home in Poland May 13, 2022 Ukrainian musician Roman Panchenko spends his days singing to crowds at Warsaw's Castle Square. It's an act of protest and solidarity on behalf of his home country.