I mean it!

From the site:

How does he do it? Composer of Performance Today’s Piano Puzzler Bruce Adolphe answered an unusual request from the brass section of the Metropolitan Opera Orchestra: write a special piece of music that combines our favorite Christmas tunes and our favorite opera arias. He called it Santa & Isolde. How many melodies do you recognize?

If you aren’t familiar with the piano puzzler you really should check it out. Bruce Adolphe is amazing!