I’m sure I’m missing something in your comment here but Western classical music seems to me to have thrived in the years following the second Viennese school -

I’m sure I’m missing something in your comment here but Western classical music seems to me to have thrived in the years following the second Viennese school - so many interesting and innovative composers - Debussy, Messiaen, Varese, Lutoslawski, Boulez - to name a small handful.