When did classical music ended?

Answer 1

the classical era of music ended when the baroque era began, often arbitrarily set at 1825 "Classical" music itself as a genré of music has never ended and most likely will continue indefinitely.

+++

Other way round: Baroque predated Classical, which in turn gave way to the Romantic then Modern styles. I believe there was also a short late-Baroque fashion called "Rococco" [sp?] in ornamental work as well as music, but you rarely hear the term in its musical context.

Answer 2

1820