This is a scene from the Japanese movie Hausu (The House), back from 1977. At this scene, this “piano from hell” is eating a girl. According the IMDB’s comments:

This is a terrible movie, not at all scary, or even funny. There are a few creepy moments but for the most part, if your looking to be scared it’s just not gonna happen with this film, you’d have to be a wussy little man to get scared with this.