Type: iter :: Pattern Int -> Pattern a -> Pattern a

iter divides a pattern into a given number of subdivisions, plays the subdivisions in order, but increments the starting subdivision each cycle. The pattern wraps to the first subdivision after the last subdivision is played.

Example:

d1 $ iter 4 $ sound "bd hh sn cp"

This will produce the following over four cycles:

bd hh sn cp
hh sn cp bd
sn cp bd hh
cp bd hh sn

iter'

iter' does the same as iter but in the other direction. So this:

d1 $ iter' 4 $ sound "bd hh sn cp"

Produces this pattern:

bd hh sn cp
cp bd hh sn
sn cp bd hh
hh sn cp bd