It is fun to experience different composers and different styles. I picked up this CD on a whim, having heard only a snippet of the first movement of Glass's Piano Concerto. Since I had not encountered minimalism previously, this was an education.
My first reaction to this CD was to defrock the composer and declare that "the Emperor has no clothes." But , minimalism being what it is, I have since revised my opinion that Glass is presenting us with a Thong as a fashion statement. After all you can get a thong in various colors, and even different fabrics. After that, however, there is no more variety. If you decrease it in size, there is nothing. If you increase it in size, it morphs into a different garment. Don't even think of wearing it sideways on a hip. Add accessories and you no longer have minimalism. So, if you require variety and complexity, you might seek a fuller wardrobe elsewhere. Keep one or two Glass pieces for specific occasions. At other times, dress sensibly.
Having trashed recurring Glass minimalism in the paragraph above, I admit that I still favor the Piano Concerto, which I recommend. But after the concerto, I typically move to a different composer without finishing the Glass CD. For me, a little Glass goes a long way.
These performances are well recorded, digitally. Naxos engineers know their stuff. The ensemble performing these minimalist pieces is understandably small, but fills the soundstage with a full spectrum of sound. I am not sure whether they should be commended or punished for being able to perform multiple Glass pieces.
I gave this CD four stars, strictly for the Piano Concerto. This generous evaluation goes with the provision that listening is limited to that piece, and not too often. If you already own other Glass CDs, deduct one star for each.