set $vel0 1
set $vel1 .75
set $vel2 .5
set $a69 69

lo $note

set $echo1 $note
set $echo2 $note
set $echo3 $note

@loop

on $note $vel0
wait 1
off $note

on $echo3 $vel1
wait 1
off $echo3

on $a69 $vel2
wait 1
off $a69

up $note
valid $note @skip1
lo $note
@skip1

set $played1 $note

on $note $vel0
wait 1
off $note

on $echo2 $vel1
wait 1
off $echo2

on $a69 $vel2
wait 1
off $a69

set $played2 $note

up $note
valid $note @skip2
lo $note
@skip2

on $note $vel0
wait 1
off $note

on $echo1 $vel2
wait 1
off $echo1

down $note
valid $note @skip3
hi $note
@skip3

set $echo3 $note
set $echo2 $played2
set $echo1 $played1
goto @loop