Why did Grieg's "In the Hall of the Mountain King" somehow get associated with "Peter and the Wolf"? I looked in wiki's articles on both subjects and did text searches for the relevant keywords and they don't mention them (Peter and the Wolf doesn't have the word "mountain" in it and vice versa). So neither article mentions the other work. So how did this happen? I'm wondering if it has something to do with Disney ("Alice's Adventures in Wonderland" is incorrectly known as "Alice in Wonderland" due to Disney).