Some Poly-rhythms :
3 over 2 ( 6 ‘quarter note’ / 6 ‘beat’ cycle )
2 x 3 = 6 ( 2 bars of 3 quarter notes / beats each )
3 x 2 = 6 ( 3 bars of 2 quarter notes / beats each )
3 over 4 ( 12 ‘quarter note’ / 12 ‘beat’ cycle )
3 x 4 = 12 ( 3 bars of 4 quarter notes / beats each )
4 x 3 = 12 ( 4 bars of 3 quarter notes / beats each )
5 over 4 ( 20 ‘quarter note’ / 20 ‘beat’ cycle )
4 x 5 = 20 ( 4 bars of 5 quarter notes / beats each )
5 x 4 = 20 ( 5 bars of 4 quarter notes / beats each )
6 over 4 ( 12 ‘quarter note’ / 12 ‘beat’ cycle )
2 x 6 = 12 ( 2 bars of 6 quarter notes / beats each )
3 x 4 = 12 ( 3 bars of 4 quarter notes / beats each )
7 over 4 ( 28 ‘quarter note’ / 28 ‘beat’ cycle )
4 x 7 = 28 ( 4 bars of 7 quarter notes / beats each )
7 x 4 = 28 ( 7 bars of 4 quarter notes / beats each )
9 ‘eighth notes’ / ‘half beats’ per bar over 4 ‘quarter notes’ / ‘beats’ per bar ( 36 ‘quarter note’ cycle / 36 ‘beat’ cycle )
8 x 4.5 = 36 ( 8 bars of 4.5 quarter notes / beats each, or, 8 bars of 9 eighth notes / half beats each)
9 x 4 = 36 ( 9 bars of 4 quarter notes / beats each)
Mad props to anyone with the skills to play these polyrhythms live, whether it be on keyboard, drums or maybe even ragtime style guitar.
Its so hard to count and split the left hand and right hand ( or fingers ) in that way.