Operissimo concertissimo is an online database based in Milan and Zurich which is dedicated to recording details of classical music concerts and opera performances. The database currently includes biographies on over 7,000 composers and 4,000 performing artists, encompassing both historical and contemporary figures. It also includes details on 340 opera houses, more than 36,000 performances, and over 55,000 recordings.
References
Operissimo concertissimo Wikipedia(Text) CC BY-SA