I think the question that you actually mean is: 'what significant event occurred during the Baroque period of classical music?'.
The Baroque period of art music saw the invention of tonality; a musical concept central to almost all music since that period. The period also saw Opera being established as a musical genre, since up until then it had been confined to the courts.
Johann Sebastian was a music composer.
Just that ... Johann Sebastian Bach.
Johann Sebastian Bach is 5' 11".
Johann Sebastian Bach died in Leipzig, Germany.
johann sebastian bach sisters names
The composer was Johann Sebastian Bach(1685-1750).
Johann Sebastian Bach. There never was a "second" name ... WYSIWYG!!
Johann Sebastian Welhaven was born on December 22, 1807.
Johann Sebastian Welhaven was born on December 22, 1807.
Johann Sebastian Paetsch was born on April 11, 1964.
Johann Sebastian Paetsch was born on April 11, 1964.
Johann Sebastian von Drey died in 1853.