This CD is the score from the movie and has the actual music from the movie, rather than music inspired by the movie.
Revenge of the Fallen offers some great battle music, music that makes the explosive action of Revenge of the Fallen even more exciting! The score also includes a great theme for Optimus Prime (which was used in the first live action Transformers). Taken together, this is a superb insturmental soundtrack!
The only thing I would have added is the themes from the original TV series as bonus tracks.
Recommended listening for any sci-fi or Tranformers fan.