The soundtrack is good. They use a lot of previously established themes in this. A lot of callbacks to the At Worlds End score as well. Ample use of the pirates theme, but not overdone. In fact I found myself smiling and tapping my foot when it pops up in this film. It's used very well and at the most appropriate times.
As is often the case, the commercially released score focuses on newer cues I'm sure. I love the music from what I'm sure is the end of the movie, perfect mix of a variety of past themes.
One simple question, does this movie have a classic Jack intro scene? That's something I look forward to in each movie, the first time we see Jack. I was in hysterics when he shot the bird from inside the coffin in Dead Man's Chest, I didn't expect him in there at all, I was lost as to where things were going with the coffins dumped at sea.