I used this to practice for an assessment I had in Music, this was amazing, I must say! I got a 5A as well. 5 - Worked in a group & played full bass line. A - Work any better, can get a level 6. B - Just on Target. C - Just got to the level. I'd recommend this piano app to anyone, don't waste your time looking around for special piano's, this is the one for you!