Antonio Vivaldi, 'the red-haired priest', spent most of his adult life as the superintendent of a musical school for orphan girls in Venice, and wrote many works for performance there. His output was prodigious, including nearly 50 operas and more than 500 concertos, but after his death his music was virtually ignored for over 100 years. Nowadays, with the huge growth of the early music industry, it is frequently performed. Perhaps his most famous work is the group of four descriptive concerti g...