The first song of these three songs is called "ANTIKYTHERA" by 7 Sequence. It’s got a rating of 4 bars on 4Trax, 9 bars on 6Trax, and a full 12 bars on 6Trax Fx, so it’s a decently hard song, especially on the 6Trax modes. While is is only 4 on 4Trax, it feels a bit harder than that to me. It’s listed as a "Space DnB." If you have no clue what this is, think electronic with a machine sound at times, but also with a soft sound at times; at least that’s the best I can describe it.
The second song in this pack is called "Rackin' Gravity" also by 7 Sequence. It rates with 6 bars on 4Trax, 10 bars on 6Trax, 12 bars on 6Trax Fx. Psy-Schranz is the style that they have listed for it. I don’t even know how to describe the song other than by saying it is a very fast song, which sometimes makes a song more difficult, but I actually passed it easier than some lower level songs because it does have a strong beat. The notes mostly hit on the beat, so you can get the hang of it quicker than some of the other songs.
The last of the three is called "DINO" by Cranky. It is 5 bars on 4Trax, 9 bars on 6Trax, and 11 on 6Trax Fx and DINO is a Rave song. Overall, it feels just slightly easier than it is rated to me, but once again, that might be because it has a really strong beat, which makes it easier to follow and time correctly.