NoteWorthy Composer Browser Plug-in - Version 1.70.8 The NoteWorthy Composer Browser Plug-in extends the capabilities of your web browser to include the display, play back and printing of *.nwc (NoteWorthy Composer) song files. NoteWorthy Composer allows you to create, record, edit, print, and play back your own musical scores. As an NWC user and web page designer, show your *.nwc song files in action on your site by embedding the song files to display in the NWC Browser Plug-in.