Last year’s Ukrainian Eurovision winners have invited the Princess of Wales to tour with them after she played the piano in a surprise appearance during the opening performance of this year’s contest. Kate Middleton played a pre-recorded instrumental piece, created by Joe Price and Kojo Samuel, during the performance by Kalush Orchestra.The hip-hop folk band congratulated the princess on her “impressive” piano skills and thanked her for joining them, saying it highlighted the “depth of support” the UK had for the war-torn country.The band said in a statement: “We want to thank HRH Princess of Wales for joining us for our performance.