This was announced by Censor.NET Chief Editor Yurii Butusov on his Facebook page."Let's bow our heads, citizens. A great Ukrainian was killed today while defending our land and all of us..."Wassyl Slipak, globally renowned opera singer, who had lived and worked in France for 19 years, in the Paris opera, but abandoned his career and returned to defend Ukraine when Russian aggression started, was killed at the front line near Donetsk as a Right Sector fighter."Volunteer soldier Wassyl Slipak is an example of a patriot citizen," Butusov wrote."He chose a call sign 'Meph', short of Mephistopheles, it was his favorite part in Faustus. He was not a professional soldier, he was a singer, listen to him signing the part of Mephistopheles," Butusov added."Waasyl Slipak died as a soldier. Books will be written about him, streets named after him; concerts will be held for him, and students will be told about him in schools and conservatoires... Rest in peace, dear Meph, you laid your life for each of us, we will not forget your sacrifice for Ukraine. We will not be half-hearted," Butusov summed up.