Wood had worked with a teacher three weeks prior to going to Barcelona and found it stressful having to play the piano and speak at the same time saying, "It was incredibly technical [...] lots of moments where it was jumping from where I'd play, listen to a click, listen to music, have to be in the right place and the right time and hear dialogue and repeat dialogue".
The closing-credit roll takes up 12 minutes of the 90-minute film.
Features the song "Ten Happy Fingers" from the film 'The 5000 Fingers of Dr. T,' a fantasy about an evil piano teacher which was written by Dr. Seuss (who also wrote the lyrics to the song).
Despite being set in Chicago, all of the film's interiors were shot in Spain, though several exteriors actually were shot in Chicago.