In the meantime there are instruments, that are slowly establishing themselves, others are completely unknown. Larger ensembles sometimes use octave or bass octave guitars. Yet baritone (quint-bass), terz or quint guitars are virtually unknown, even though they sound wonderful in an ensemble or played solo. Giuliani even wrote a Concerto in F-major for terz guitar.
        
      































        















        



















        



















      















      












      


























        





































        















        








        





        













        










        


