http://blogs.technet.com/andrewdr/archive/2009/01/15/microsoft-research-songsmith.aspxYou have got to download this . I was put onto it by Eileen Brown who has also written about it. Basically, sing any song you like and songsmith puts a backing track in a style to match your voice. You can also choose various styles and do some recordingen-USCommunityServer 2.1 SP1 (Build: 61025.2)