I just don't believe it. Maybe in some places, but in general not in the USA. As I get older and crankier I notice a lot of things about younger musicians that disturb me. Most egregious, they do not know the literature. You have no idea how many young people I work with who have never heard a symphony by Beethoven, Tchaikovsky, Mahler, Shostakovich. They know no operas or ballets. The only orchestral music they seem to be familiar with are the blockbusters that they might have played in marching band arrangements. And they have zero interest in the music, the composers or anything else. Now, they know some film music, some video game music, but classical in the ordinary sense? Forget it. It's really discouraging to meet prospective music educators who are oblivious to it all.
As far as audiences go, they're as old as ever. Despite attempts by groups to attract younger players they have little to show for it. I did a Young Musician's Competition in November. The 12 year old kid played the WIenawski 1st concerto amazingly well. Despite advertising, school announcements, etc there weren't throngs of young listeners.
Last week I was approached by a guy who wants to help the orchestra and really attract a crowd of young people and he knows how to do it, LIke this:
If find it horrific, distasteful, vulgar, disrespectful and wrong. If this is what so many of the young think CM is all about, I'm glad they're staying away.
There are places where young people seem really into classical music in the traditional sense: China and Japan for two. There are countless summer music camps for youngsters where they get a heavy dose of CM. But why doesn't that translate to more interest in CDs, concert tickets, etc? Every CM group in the country is looking for answers and so far haven't found them. Sorry, and scary, state of affaris.