Editing Polyrhythm (section)

=== Polyrhythm, not polymeter ===
The illusion of simultaneous {{music|time|3|4}} and {{music|time|6|8}}, suggests [[polymeter]]: [[Meter (music)|triple meter]] combined with [[Meter (music)|compound duple meter]].

{{Block indent|<score sound="1">
    \new PianoStaff <<
       \new DrumStaff <<
           \drummode {
              \set Staff.timeSignatureFraction = 6/8
              \set Score.tempoHideNote = ##t \tempo 4 = 120
              \repeat volta 2 { tommh4. tommh }
           }
       >>
       \new DrumStaff <<
           \drummode {
              \set Staff.timeSignatureFraction = 3/4
              \repeat volta 2 { tomfh4 tomfh tomfh }
           }
       >>
   >>
</score>}}
However, the two beat schemes interact within a metric hierarchy (a single meter). The triple beats are primary and the duple beats are secondary; the duple beats are [[cross-beat]]s within a triple beat scheme.

{{Block indent|<score sound="1">
    \new DrumStaff <<
       \new voice \drummode { 
           \set Score.tempoHideNote = ##t \tempo 4 = 120
           \time 3/4
           \stemUp \repeat volta 2 { tommh4 r8 tommh r4 }
       }
       \new voice \drummode {
           \stemDown \repeat volta 2 { tomfh4 tomfh tomfh }
       }
   >>
</score>}}