VirtMus (virtual music) is a free application that allows the user to display sheet music and turn pages without removing the hands (or feet) from the instrument the music is performed on. This feature is very useful during concerts and practice sessions as it allows the musician to focus on performing the music without interruption. The software also allows the users to store and organize their entire sheet music collection on a laptop, making it fully portable and available at a click of a button.

See the http://virtmus.com/ website for more details and full documentation.