Although Felicity Jones depicts a high school teenager in this film, she was actually 27-28 when it was filmed and 30 when it was released in the US.

On the music stands in Keith's classroom can be seen books from the excellent out-of-print instrumental education series "100 Days to Sight Reading Excellence" by Timothy Cotov and Thomas Murphy.

Mackenzie Davis received an "introducing" billing, despite already having a small role in the movie Smashed (2012)