Good music for "in between"

This CD contains 2 kinds of music: rock and soft-rock with vocal and instrumental pieces. Not all rock pieces I liked, because some are very similar and unless you're a big fan of such music direction, you do not listen to the tracks necessarily consecutively. Some quiet pieces with rockier note are, these sound somewhat crystalline-melancholic. The second part of the CD includes instrumental, melodic, quiet, yet very dynamic and rhythmic compositions. I personally find this very nice (better than the rock). Such can be very good in "large quantities tolerated" (Investigation Suite is a brilliant example of simple, melodic, clearly structured music).
4 Stars good for a good collection. Point deduction, there is not enough variety for in musical genres, which I so much appreciate in soundtracks.