A patch for liv3c0der, used at JSConf.eu 2013 and before my talk at onGameStart 2013.

middle.js

// NAME: middle
function draw(c, s) {
    LC.cls(c)
}
// context,     outlet, times, time per step, state, data
// should return array of functions that accept a single argument: the time

function pattern(c, o, t, l, s, d) {
    var i;
    var ll=t.length;    
    //s.init('loop',0);    
    notes = [0,3,7,10,12,15,19,22];
    AE.DelayLine.delayTime.value = l*3;
    AE.Arp(notes, t[0], l, 16, function(time,n) {
        AE.SpreadSynth.flt_a = 0.8;
        AE.SpreadSynth.flt_mod = 800 + 2000 * ((Math.sin(s.loop / 2) + 1) / 2)
        AE.SpreadSynth.play(AE.REV, time, l/2, 24 + notes[s.loop % notes.length] + n);
    });
    
    AE.AcidSynth.play(AE.REV, t[0], l*2, 24);
    for(i=0;i<ll;i++) {
        //if (i % 4 == 0) AE.S['t_base'].playShot(o, t[i]);
        //if (i % 8 == 4) AE.S['t_clap'].playShot(AE.REV, t[i]);
        //if (i % 4 == 2) AE.S['t_hhcl'].playShot(o, t[i]);        
        if (i % 4 == 2) AE.NoiseHat.play(AE.DEL, t[i], 0.6, 5, 2000 + Math.random() * 3000, 10);    
    }
    
    
    
    s.loop++;
}