(Credit: Elena Cherkashyna / Merri Cyr) Soprano Nadine Sierra and tenor Xabier Anduaga will appear together in a concert on Sep. 9, 2020. The performance, entitled “A Celebration of Opera” will also feature pianist David Aronson. Concert, which will not include a live audience, will be organized by the Gibraltar Philharmonic Society. Sierra will perform “Ah, je veux vivre” from {…}