Mohan--So here was my thinking on "Nachtmusik". My titles are most often intuitive, even when they are waves or landscapes. In this case it felt moody like a nocturne, and the little bright color notes almost had a sound to them. Mozart's Eine Kleine Nachtmusik is a favorite of mine so that's probably where the word popped into my head--it's Nightmusic, but evokes that piece. Thanks for asking!