According to the classical music site Bachtrack, Mozart is the most performed composer last year. With more than 28 000 events listed he came before Beethoven (the most played the previous year) and Bach.
Three of top ten operas presented around the world were “le Nozze di Figaro, die Zauberflöte and Don Giovanni” which shows that a large share of all of his played music were operas. The most performed work of all across opera, instrumental and ballet was Tchaikovsky’s Nutcracker but closely after came Eine Kleine Nachtmusik.
Put in perspective almost 80 events per day were needed to fulfil the list with all events where Mozart’s music was played. While most of the busiest orchestras were in the United States like the Chicago Symphony, the New York Philharmonic and the San Francisco Symphony, the Berlin Philharmonic made it to the fourth place. And while the Boston Symphony isn’t among the top five busiest orchestras, their conductor John McPhee was the most active with 28 separate engagements during December alone.
The full list is available on Bachtrack website. There you could also find listings of concerts from all around the world. There were over 2000 classical music reviews posted on the website last year.