Music:Great.The sound in the game is great and it gives this game and all the different courses a good flavor.It is still the same sorta happy music but on some of the harder courses the music changes to fit the course
Graphics:Excellent.This game looks FANTASTIC.They have a great variation of colors for both the courses and the characters.The enviroments look AMAZING and they are so interactive.
Gameplay:WOW.This game has a slight learning curve to it but if you have played the rest of this series you should be golden.A new feature they have added is the 2 character system where you are now racing with 2 players insted of one.This changes the game a lot but I enjoyed it.This system allows you 2 power-ups.Then there is the drift system which helps you get a boost if need it,this is the hardest skill in the game to master.You can also mix your characters up like large with small or medium are theyr'e power-ups like Mario's fireballs with Donky Kongs gaint banana skin.You can also unlock characters and different courses.
Overall: This is a very fun and addictive game to play by yourself or your friends.I give this game a 9