2018 release, the official soundtrack to Callas in Concert · The Hologram Tour. Forty years ago, Maria Callas shrugged off the earthly binds of temporal life, leaving a bereft world longing for her presence, her performances, her voice. Now she returns to the stage, in all her grandeur, confirming her immortality to stunned audiences. Introducing Callas in Concert, a triumphant event that brings the beloved La Divina to the stage via hologram, singing to the accompaniment of a full live orchestra. As this unprecedented performance unfolds, you will surrender all notions of what is real and get lost in the magic of perhaps the best opera singer of all time.