Allegro Song Sample    Lesson Sample by Mauro Giuliani (Downloadable). This level 1 classical guitar piece is played all the way through and then taught in 2 to 4 measure increments totally by ear. You learn the song quickly and correctly while developing your own ability to play by ear. This is a fast and easy way to learn a great classical guitar pieces without print, tab, or video. Check out our other level 1 classical guitar titles!