Frog Choir

The Hogwarts Choir is an organization possibly formed by Filius Flitwick. In 1993, they performed the song Something Wicked This Way Comes at the Welcoming Feast (in which they are holding very large toads as they sing). At the 1994 Triwizard Tournament (which was held in Hogwarts), the Choir performed some melodies before each Triwizard Task. They usually practise at the Great Hall. In 1995, the Choir was submited to inspection by the Hogwarts High Inquisitor, because of the Educational Decree Number 24. The director is Professor Filius Flitwick.

Behind the scenes
In Harry Potter and the Philosopher's Stone (video game) and Harry Potter and the Chamber of Secrets (video game) for GBC there is one Music Classroom featured on the Fifth Floor of Hogwarts. It could be a possible place for the Choir to practice.

Appearances
Harry Potter and the Prisoner of Azkaban (film)

Harry Potter and the Goblet of Fire (film)

Harry Potter and the Order of the Phoenix (film)