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BARCELONA, SPAIN - APRIL 20: Charles Aznavour performs on stage at Gran Teatre del Liceu on April 20, 2018 in Barcelona, Spain. (Photo by Xavi Torrent/Redferns)

BARCELONA, SPAIN - APRIL 20:  Charles Aznavour performs on stage at Gran Teatre del Liceu on April 20, 2018 in Barcelona, Spain.  (Photo by Xavi Torrent/Redferns)