Isabelle Huppert really played the piano in the film. She had studied piano for 12 years. As preparation for her role as a piano teacher, she resumed practicing a year before the film was started.

Received three of the most important awards at the 2001 Cannes Film Festival ( Grand Prize, Best Actress, Best Actor ). Since this edition of the festival, there is law which forbids for the jury to give so many important prizes to the same movie.

Isabelle Huppert's performance in this film is considered to be one of the greatest of the previous decade and inspired actresses like Jessica Chastain or Nicole Kidman.

The character of the mother is based on author Elfriede Jelinek's real life mother.

The film was released on blu-ray by the Criterion Collection in September 2017. It's the first edition of the movie to be released on Region A blu-ray with English subtitles.

The part of Erika's mother was originally offered to Jeanne Moreau

Isabelle Huppert's performance in this movie is the favorite of actor Alexander Skarsgard.

First movie wherein Michael Haneke wrote a screenplay based on a book as opposed to using his own material

Included among the "1001 Movies You Must See Before You Die", edited by Steven Schneider.

Isabelle Huppert also plays a piano teacher in the psychological thriller Greta (2018) opposite Chloë Grace Moretz.

In the last scene, when Erika wants to talk to Walter in the Conservatoire foyer, the girl he can be seen with is a not-yet-famous Eva Green

Erika walks through a snack bar. On its back wall, theater posters can be seen for a motion picture, "Frequency". Frequency [2000] is a real movie - which isn't about music - filmed in Canada and the US. Each key on a piano has a unique frequency.

During a career retrospective in 2016, Isabelle Huppert said that her last scene in the movie (where she stabs herself) required 52 takes.