What is "musevisa"

Musevisa (The Mouse Song) is a Norwegian Christmas song by singer-songwriter Alf Prøysen from 1946. Prøysen wrote the lyrics for the song in 1946, to a traditional tune. Musevisa is a secular song, where a family of anthropomorphic mice are preparing for Christmas. The mouse-mother specifically warns her children against the dangers of the mousetrap. In December 2008 the alleged rediscovery of a missing verse from the song attracted the attention of the Norwegian media. Though an alternative ending was originally written for the song, the discovery in question was eventually revealed to be a hoax.