I saw this movie in the early 70's, when I was 15 or 16. I was living in Peru, at the time. There was a girl my age that I liked a lot, that I took to the movie and we both identified with the main characters. I remember that you could get the theme song (record, 45 RPM) under the title "Blue Balloon Song" or something along these lines, from a local record label. The theme song was very popular and was played often by the local radio stations for several weeks. I am tempted to track her down and ask if she still has the record. This movie was recently released in DVD. I watched it again after 30+ years. This time with my wife and children. It was a big hit at home. Simple but enjoyable plot, very entertaining, pretty clean movie for today's standards. I would recommend it for the whole family.