Complex sentence: As early as 1772, so-called "Morgenkonzerte" ("morning concerts") were conducted or performed by Wolfgang Amadeus Mozart in the Garden Hall of the Palais Augarten; but the house was also used for many other festivals and concerts.
Split into simpler sentences: As early as 1772, so-called "Morgenkonzerte" ("morning concerts") were conducted or played by Wolfgang Amadeus Mozart. These took place in the Garden Hall of the Palais Augarten, but the house was also used for many other festivals and concerts.