Overall Impressions:

- Game is definitely well made, with no bugs or glitches encountered at all

- UI is intuitive, even for a first timer to the genre and the game itself, I was able to get it immediately

- Tutorial is solid. It got me through the basic concepts and ready to try tackling the first real beat immediately

- The music is great! I can clearly tell the level of attention to detail to create catchy tracks such as those found here. The Compile_R track is my favorite, but the dev's attention to detail shines through in the Defiant_Machine track, for me personally. Its layered and has awesome progression that made me feel good. 

- I really have no suggestions as the game is solid overall, so I'll just throw in a suggestion to add more of your tracks so we can hear more of your creations :)

- Although my opinion may not count for much since I haven't played a lot of games in this genre, I'd still recommend this game because its fun, has great music and is well made!