Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is a MUST HAVE!! It's a MASTERPIECE!

I love Christmas music & this is such a treat! I cannot say enough wonderful things about this CD. Peter Cetera & Tony Harrell have come up with a pretty phenomenal piece of work!!!! The arrangements are really fantastic & exciting! The original songs are classic. I look for a couple of those to become a year after year tradition. Every song really paints a picture! You can certainly tell that a lot of hard work must have gone into this. It seems passionate & very real. That only tells us that there has to be a lot of heart in this beautiful, must have of a Christmas CD!!! Thanks Peter Cetera & Tony Harrell.