Here's the sound track to Sonic Lost World. It's called "Without Boundaries". It appears to have all of the songs from the game. The cover here is very colorful, as it shows the Deadly Six, but it has been criticized as being uncreative because someone just duplicated the same cluster of Deadly 6 over and over to make the background for CG breakdancing Sonic.
It is actually a 3 disk set. What you see here is the cardboard case that holds the plastic CD case inside. What you can't really see too well in the photo to the left is that the paper has bits of shiny rainbow glitter in it, which you can see through the ink/designs. (you can notice it on Sonic & the back of the sleeve in the photo below)
The set also comes with 3 papers/sort of a pamphlet which you can see below.
The plastic case has an all blue tone CG of breakdancing Sonic & the title. The back of the sleeve is sparkly & has track listings for each of the disks.
Here are the 3 disks, each with different CG art in the numbers. The first & second have sort of "negative color" images for Sonic & 2 of the deadly 6. The 3rd has regular-shaded but yellow/red hue for 3 more of the deadly 6.
These 3 colored pages of the pamphlet have track listings (black) credits (purple) & the red has white text in Japanese. All photos & info in this area by PiplupFan77