Barorque music is lovely! I'm especially keen on the Goldberg variations (Bach) beautiful stuff! (Nice videos of Gould playing some pieces on youtube... but too many links to mention, and they are all so comfortable to the ear! ^.^)... I'm interested to know what season you like most of Vivaldi's? Winter has been my all time fav as a whole, but the end of summer is also very powerful!
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YouTube - Rostropovich plays the Prelude from Bach's Cello Suite No. 1 (Prelude from Bach's Cello Suite No. 1) this is also quite a moving piece! Although I'm more of a piano person (even though my knowledge of classical music is limited even in that area) I still can't stay away from Bach's violin 'masterworks'... if you can get a hold of 'em I recommend it! The ones I have are the Brandenburg concertos...