If you’re in Europe, you can ring in the New Year with Met stars Angel Blue, Javier Camarena, Matthew Polenzani, and Pretty Yende singing arias, duets, and ensembles from opera and operetta, starting at 10 P.M. C.E.T. If you’re in the Americas, the fun begins at four P.M. E.T., a late-afternoon champagne waterfall of song. The concert is performed live from the Parktheater in Augsburg, Germany, and will then be available on demand for 14 days. Tickets required. —L.J.