Go to the song menu by clicking "shift & F-1"
Click "page" to go to page-2.... / On the right hand side of the screen you will see the option "erase" above F-6. / Use the value-dial to highlight the song that you want to delete. / Click "mark" above F-3 / Click "execute" above F-4. / The screen will ask you if you're sure you want to erase the song. / Click "yes/enter" if you're sure.