{Timing}
    $start_time := $ENGINE_UPTIME

    {Counters}
    $step_counter:=0
    $prefilter_counter:=0
    $postfilter_counter := 0

    {Ignore first played note}
    if($step_sequencer=1)
        ignore_event($EVENT_ID)
    end if


    while($NOTE_HELD = 1)

        {Step Sequencer}

        if($step_sequencer=1 and (($ENGINE_UPTIME-$start_time) mod ($step_length/1000)) = 0)

            if(%steps[$step_counter] >= 1)
                play_note($EVENT_NOTE,%steps[$step_counter],0,$step_length/$step_divisor)
            end if

            $step_counter := $step_counter + 1

            if($step_counter >= $step_num_steps)
                $step_counter := 0
            end if

        end if

        {Pre Filter Sequencer}

        if($prefilter_seq_enable=1 and (($ENGINE_UPTIME-$start_time) mod ($prefilter_length/1000)) = 0)

            $count := 0
            while($count < $NUM_GROUPS)
                {set_engine_par($ENGINE_PAR_CUTOFF,%prefilter_steps[$prefilter_counter],$count,$prefilter_position,-1)}
                set_engine_par($ENGINE_PAR_MOD_TARGET_INTENSITY,%prefilter_steps[$prefilter_counter],$count,find_mod(0,"FILTER_CUTOFF_CONSTANT"),find_target(0, }find_mod(0, "FILTER_CUTOFF_CONSTANT"), "FILTER_CUTOFF_CONSTANT"))
                message("")
                inc($count)
            end while

            $prefilter_counter:=$prefilter_counter+1

            if($prefilter_counter >= $prefilter_num_steps)
                $prefilter_counter:=0
            end if

        end if

        {Post Filter Sequencer}

        if($postfilter_seq_enable=1 and (($ENGINE_UPTIME-$start_time) mod ($postfilter_length/1000)) = 0)

            $count := 0
            while($count < $NUM_GROUPS)
                set_engine_par($ENGINE_PAR_CUTOFF,%postfilter_steps[$postfilter_counter],-1,$postfilter_position,1)
                inc($count)
            end while

            $postfilter_counter:=$postfilter_counter+1

            if($postfilter_counter >= $postfilter_num_steps)
                $postfilter_counter:=0
            end if

        end if

    wait(1000)
    end while

end on