Frederik attended concert while Queen Margrethe is hospitalized

Queen Margrethe of Denmark is under observation in the hospital due to a persistent cold, causing concern. Her condition is currently unknown. King Frederik X, her son, attended a Robert Plant concert in Copenhagen on Thursday evening, showing enthusiasm. He had previously visited his mother at the hospital, as confirmed by the Danish Royal Palace. Frederik, a known rock music fan, replaced his mother on the throne early last year. He has a close relationship with Margrethe, who abdicated after 52 years.