all this talk of 5 & 7's made me think about Joe Morello's time tabe is "Master Studies" for the snare drum. check it out it:

quarters notes (1:1)

quarter note triplets (3:2)

8th notes (2:1)

8th note triplets (3:1)

16th notes (4:1)

quintuplets (5:1)

sextuplets (6:1)

group of 7 (7:1)

32nd notes (8:1)

group of 9 (9:1)

group of 10 (10:1)

group of 11 (11:1)

64th notes (12:1)

It's a lot fun and work. I found with groups if 9 thru 12 I had to work out the number of strokes to get comfortable enought with the combination to move on to the next grouping.

****ALL WAYS USE A METRONOME****
**WHEN TRYING EXERCISES LIKE THIS**

John