Also check out our Featured Free and Reduced Apps 21st May including Dexteria Jr)
All right. I'm going to try, but I don't think that I'm going to be able to describe quite how powerful this app is.
If you are an instrumental student or teacher, SmartMusic (which requires a subscription for full access) is going to change the way that you practise and play. Your music is onscreen, you can record while you practise along to the built-in accompaniment, you can compare takes, adjust the speed of the accompaniment to suit your ability, transpose the key up or down at the touch of button, it supports just about every instrument (including voice) known to mankind, and even marks success and improvement needed within the practice session. Exhausted? Me too. And that's only covers a small portion of what it can do.
SmartMusic is an online subscription service which gives access to more than 30,000 solo and ensemble titles and 50,000 exercises for woodwind, brass, string, and vocal musicians.
BUT you can have a good play with the 15 or so titles that are provided with the free app download to really explore what this program can do! I must admit, I was simply blown away.