In the Dialogo, Galilei condemns polyphony, praises monody, and expresses the wish that the musical practice of the ancient Greeks would be restored; corrupt and incomprehensible contemporary music would be replaced with an idealized version of the supposed music of the ancient time.
No Dialogo, Galilei condena a polifonía, alaba a monodía, e expresa o seu desexo de que se restaure a práctica musical da Antiga Grecia; a música contemporánea, corrupta e incomprensible, debería ser remprazada por unha versión idealizada da suposta música antiga de Grecia.