set $looptime 8
set $dist 6
set $notes 11

set $one 1
set $remaining $looptime
set $count $notes
set $lastvel .75

hi $note

@loop
set $vel $remaining
div $vel $looptime

set $time $remaining
div $time $dist
sub $remaining $time

on $note $vel
wait $time
off $note 

down $note
valid $note @skip
hi $note
@skip

sub $count $one
gt $count $one @loop

hi $lastone
on $lastone $lastvel
wait $remaining
off $lastone

set $remaining $looptime
set $count $notes

goto @loop