When I was about 6 or 7 in the 90's, I remember watching some movie about trolls. There was an evil troll and I remember all the trolls singing a song about him that was something like "he's the best of the worst" or something along those lines. At the end of the movie, all the trolls joined together and sang the song "Love train." I don't think this was a cartoon movie, maybe a claymation or something like that. If you have any idea what I'm talking about let me know! Thanks! 