People have noted a lack of key signatures in the full scores vs Piano Collections, which is fine IMO.Directly comparing Death by Glamour, I found the full score to be more accessible to play over the collections.It contains scores for all 101 pieces of music in the OST, including obscure ones that may not necessarily be ideal for piano.The full score has a wider range of difficulties: beginner, intermediate and advanced.The Albums for both collections are available to listen via Spotify and youtube if you want to hear what the Piano Collection pieces sound like. I found them hard to play/learn as an “intermediate” player. Between these two books, you have a total of 31 pieces to play. They are designed with the piano in mind and bring out the best in it. Piano Collections 1 & 2 are fancy arrangements with embellishments. I got myself all three this Christmas, getting back into piano after a long break.