The characters in
Nodame Cantabile are of college-age, but they're still undergoing the transition from childhood to adulthood. Nodame herself is the prime example, but even stuffy know-it-all Chiaki discovers he still has a lot to learn about life. The English-dubbed version is streamed on
Crackle; for subtitles you need to watch
fansubs.
The story is set in a classical music academy. Chiaki wants to become a conductor like his idol, Sebastian Viera. Nodame just enjoys playing the piano, but beneath her ditzy exterior lies an immense but undeveloped talent.