Here are a few resources you can use if learning about the Composer Antonio Vivaldi:

Great pieces to listen to:

YouTube – Guitar Concerto in D major

YouTube – Violin Concerto in A minor Op. 3 No. 6

Resource List

Classics for Kids – has short radio shows on Vivaldi’s life and compositions, including one on violin concertos. – An interesting site with biographical information as well as many other links to relevant information

Art Links

Caravaggio: The Crucifixion of St. Peter