Polyphonic ringtones are the best kind of ringtone because they are more advanced musically. Regular ringtones are monophonic, which means that only one note can be heard at a time. But Polyphonic ringtones can play several notes at the same time, combining for example a piano sound with drum and base. In other words, the difference between regular ringtones and polyphonic ringtones is equivalent to the difference between a solo flute player and a whole orchestra. The standard for polyphonic ringtones is the well-known MIDI file format.