What Norwegian Romantic era composer composed the melody found on a song from the movie "Trolls"?
Hair Up (song): "Hair Up" is a song recorded by American recording artists Gwen Stefani and Justin Timberlake and by American comedian Ron Funches from the official soundtrack to the 2016 film "Trolls". Hair Up (song):  The song uses the melody of "In the Hall of the Mountain King" from "Peer Gynt" by Edvard Grieg. Edvard Grieg: Edvard Hagerup Grieg (] ; 15 June 18434 September 1907) was a Norwegian composer and pianist.
Edvard Grieg