The music helps the players to "get down" a bit. This is a nice change from the many games, rather the opposite effect. With headphones, the experience is actually more intense, it has the app at startup even out.
The gameplay is simple and quick to understand. Also, if the application language is English, which will help in addition to the displayed text symbols the less linguists users in understanding the game.
The difficulty of the game is appropriate. There are lighter level and also those that require a few attempts. Basically, I found it so far but still nowhere frustrating. The very precise control also gives you the feeling that one who ever really has himself to blame for the failure. Because there is no rating for each level (ala 1, 2 or 3 stars) but only managed or not managed, I never developed the ambition to play always perfect. Many levels are very good from the outset planned, others often develop by chance. The AI plays to my observation always the same rules as the player (even it is small, if she wants to move), for me, the game feels thus very fair to.
All in all, a definite recommendation!