content: An improvisation is wonderful, if, and this is a huge if, an improvement on the original is made. After listening to all 15 cuts I have to say that in every case the original is more enjoyable and satisfying to me to listen to. Can you really expect Montero to improve on Vivaldi? That really is too much. However if it is not as enjoyable as the Vivaldi, why would I spend money to listen to Montero? This revue is in no way a reflection on her pianistic abilities, but it sure is a gripe about butchering classic source material.My advice, and it seems to be unique among reviewers so far, is that if you like Vivaldi, listen to Vivaldi, not Montero seeking to change Vivaldi. Or Bach. Or Scarlatti. Or Pachebel...The original is stunning...the alterations to it are just misc. music.