The game is awesome and addictive but has two problems: 1. Once all your box slots are full you cant play until a slots open. This sucks and kills the gaming exp as you cant play. 2. If you miss one note out of 1000000 the game is over. It should penalize you for it but not end the round. Both of this problems are easily solved by adding a 'practice mode'. No score or beatcoins but you could play. If this changes I will change the rating to 5 stars.