This is both disc 4 and 5 of the Dragon Ball Daizenshuu 5 disc set. Disc 4 covers the DBZ TV series BGM as it appeared in every country that isn't America. Disc 5 covers the Dragon Ball and DBZ Movie BGM, up to DBZ Movie 9. The composer, Shunsuke Kikuchi, is a well known Japanese composer for tokusatsu shows and anime produced by Toei. His score for the Dragon Ball series is excellent, giving the series a modern wuxia feel, and it's very dramatic and emotional. I never understood why they had to change the music in America, especially when the replacement music isn't nearly as good.
The only problem with this soundtrack is the lack of much of the Buu era music from the TV series and Movies, but that's because this soundtrack was released before they reached the end of the series.