First things first, if you love classical music you must watch this.
-Story, its really interesting, you can see the music by two ways, tha orchestra director and a piano student and how their story progress. You will appreciate classical music if you never give this style a chance.
-Art, the art its simple but i dont thing is anything really important in an anime like this. But dont worry, when they are playing the piano or in an orchestra its really nice to watch.
-Sound, i dont have nothing to say, if you see my user name you will see that i am a huge fan of this kind of music so when i watched this anime i feel sooooo good. The ost that this anime has (own creation) its nothing special but dude, you have masterpieces.
-Character, I think the characters are really nice. Chiaki is not the traditional "anime boy", he is a man, an adult, and he will decide like you are not used it.
Nodame is really good too, she is not the traditional "anime girl" aither. You will fond of everyone.
-Enjoyment, amazing, i like "slow animes" and Nodame Cantabile is super with that. I've seen how they make music, i've seen how their relationship change, etc... I realy enjoy this anime and i felt really sad when i finished all the seasons =(
-Overall, if you are not a little girl (or a little boy) anymore like me (+20), and you want to watch more animes for your age this will be perfect. You will watch something more realistic, funny, emotional and with the best music. i recommend this anime to all of you ;)