It's a whole lot of love stories and most of all it's about the wonder of music and the way it brings people together. It's set around a eleven year old boy; it's his quest to find his parents, his discovery of music and how he learns to express himself along the way.
It has some very cool playing in it, like this piece, which is his first encounter with a guitar.

If you're a true romantic you'll love it. Suspend disbelief and I think many of you who aren't true romantics will enjoy it too.
BTW - don't judge the movie by the trailer. It doesn't tell you much, except that there are some sad bits.
Seen any cool music movies lately?