I don’t really remember much about the movie but one scene which was a little boy was under the bed of a little girl he liked I think he was trying to sneak and get something but she walks in her room so he goes under the bed and she starts dancing in front of her mirror not knowing he’s there I believe she was wearing a ballet outfit and the song you cant hurry love plays.
This is quite similar. Once Upon A Time in America.
http://youtu.be/lY5gag1ZMdQ