What U Workin' With was a song from the film based on the dolls created by whom?
What U Workin' With?:  is a song recorded by American singers Gwen Stefani and Justin Timberlake for the official soundtrack to the 2016 film "Trolls". Trolls (film): Trolls is a 2016 American 3D computer-animated musical comedy film based on the Troll dolls created by Thomas Dam.
Thomas Dam