When I was younger my mom had this vcr tape with a troll movie on it. In the movie it had good trolls and bad trolls. The good trolls had a radio station in their town and the bad trolls stole the sun. cause the bad trolls got these ugly bumps if they were in the sun. there was a train in this movie cause they ride it to go get the sun, and they sing songs in it. One is " people every where join hands" and the another one was when they were resuing the sun " we will rock u". My mom said she don't remember and that I'm nuts lol someone help.

Sounds like a mix between "A gnome named Gnorm" and "A troll in central park"

Your not crazy I'm trying to find the movie too and its neither of those.

I just found it kid VHS titled Trollies Musical Adventure.