La Folia
Hearing a work by Vivaldi jarred my memory and led me to learn about "La Folia".
Always on the look out for peaceful music to add to the night time sleeping collections we have I recently took a renewed interest in "Domine Deus" from Vivaldi's "Gloria". Then the other morning I heard another work by the composer- "Trio Sonata in D Minor, RV 63" that sounded very familiar.
Wow, what I didn't know! Here's a link to information about it. The site in question should win an award for the worst looking design in web sites, but the info looks solid.