In this video, two opera singers, Nicolas Preston and Chelsea Chaves sang some opera songs. Chelsea was recently in a car accident. That is why her arm was in a sling. Since she is a professional singer, the show most go on.
These songs sound like love songs between the duet couple on stage. I am sure these songs were in some vintage 50s or 60s love story movie, maybe even a romantic comedy, because that is the feeling I get when I listen to them sing.