Fern’s tale

Fern's tale is a deleted scene from hearts of where Miley's mother, Fern, tells a "History" tale about trolls of different type of music.

Sypnosis
Fern explains to the Bergens that in Pre Historic Times, there were types of trolls with different style of music: Pop, Funk, Classical, Techno, Country, and Rock. Six magical strings kept by each tribe leader that powers their specific kind of music. When they came to existence Bergens themselves were even larger (A Hundred times larger than a Ringmaster troll's Big Top Tent, according to Fern), who would chase the trolls and eat them, in a similar manner to a Cat and a fish.

While trolls of different music are still in separate ways, across the years, Fern believes this to be why they don't eat the different trolls than pop?

It was unknown of why the film was cut if it was the prologue events of the film "Hearts new beat".