I even tried googling some song lyrics from the movie & I get nothing. It's not a cartoon, it's real kids, boy & a girl. They meet a bunch of trolls I think? All I remember is there's a bad troll in a cave, & they tickle his foot with a feather & sing a song, "Work your magic, make it quick.. toe tickle tickle tickle toe tickle toe, make this troll a happy soul!"
I really hope someone knows the title to this movie.

Never mind, it's The Treehouse Trolls!