LifesongY is a software tool to view and analyze recorded courtship behavior of the fruit fly, Drosophila melanogaster. It's created in C#.NET, and essentially a Windows counterpart of the OS X based LifesongX, which was developed by John Rieffel and Adriana Villella, in Jeffrey Hall's lab at Brandeis University's Biology Department and was further based upon Lifesong, written in the early 1990's.