Mario Lanza & Gloria Boh - Dio ti Gioconda (Otello) Hi Fi Rehearsal?

It has been suggested that this recording is an out-take from Lanza’s film SERENADE 1955 but I rather think it was a rehearsal with the then unknown soprano Gloria Boh prior to Licia Albanese recording the duet with Lanza for the film. Digital audio restoration 2020 STEREO.