Creepy animated movie, late 70's early 80's
I'm trying to figure out this movie I saw on TV when I was 6 or 7. I don't remember the plot exactly. I thought it was about some creepy slimy forest creatures who steal a baby and the older brother has to rescue him, but that could have been a completely different movie. The main thing I remember is the flute sounding organ music in the main theme and through-out the movie. I think it was animated in a similar style as the hobbit.
Please help, this movie has been haunting me for 20+ years.
