The music name "Good Night, Sweet Dreams" does not have a specific representative track. However, there is a lot of music that contains themes like Good Night and Sweet Dreams. If you want to find a specific song, you can provide more information, such as the singer, band, album, or some lyrics of the song, so that I can better help you find the music you want. If you just want a piece of relaxing music that can help you fall asleep, you can try searching for some soft music, piano music, nature sounds, etc.