It took me a while to find this one. Opera Australia did a production of Puccini's "La Boheme" featuring a young cast. This makes sense in that the opera is about young folks in Paris. They set the production in the 1950's rather than the 1840's. The two leads are not only magnificent singers, but good looking too.
This is Mimi's aria in Act 1 followed by the big duet. Have your hanky ready.
Puccini: "La Boheme", two numbers from Act 1