Help with Keyboard Event

Question

Hi, I am designing a drum machine in flash pro Cs6 actionscript 3.0  and I am trying to add a keyboard event that will trigger a button event that I have all ready created, I can create the event to play the sound but this is not what I want, can I call the click event so the button will move on the key event triggering the sound, here is an example of one of my buttons code... btn, thank you if anyone can help.
import flash.events.KeyboardEvent;
playsound2.fla
playsound with extra functionality:
textbox added.
Displays ID3 info of the sound
btn.addEventListener(MouseEvent.CLICK, playSomeSound);
function playSomeSound(e:MouseEvent)
          var req:URLRequest = new URLRequest("Savage.mp3");
          var s:Sound = new Sound(req);
          s.addEventListener(Event.COMPLETE, onSoundLoaded);
          s.addEventListener(Event.ID3, onID3Info);
function onSoundLoaded(event:Event):void
          var localSound:Sound = event.target as Sound;
          localSound.play();
function onID3Info(e:Event):void
          var id3Props:ID3Info = e.target.id3;
          var sOut:String = txt.text = "";
          for (var propName:String in id3Props)
                    sOut = propName + "=" + id3Props[propName] + "\n";
                    trace(sOut);
                    txt.appendText(sOut);
          txt.text = id3Props.comment;
var ba:ByteArray = new ByteArray();
var gr:Sprite = new Sprite();
gr.x = 5;
gr.y = 50;
addChild(gr);
var time:Timer = new Timer(50);
time.addEventListener(TimerEvent.TIMER, timerHandler);
time.start();
function timerHandler(event:TimerEvent):void
          SoundMixer.computeSpectrum(ba, false);
          var i:int;
          gr.graphics.clear();
          gr.graphics.lineStyle(2, 0xFF0000);
          gr.graphics.beginFill(0x00ff00);
          gr.graphics.moveTo(10, 10);
          //  draw a circle.;
          var w:uint = 15;
          for (i=0; i<512; i+=w)
                    var t:Number = ba.readFloat();
                    var n:Number = (t * 200);
                    gr.graphics.drawCircle(i, 0, -n);

Answer 1

Thanks, this was the code I added in the end and it works nicely, It covers my sound and id3 aswell as Im displaying lcd text in a dynamic text box.
stage.addEventListener(KeyboardEvent.KEY_DOWN, btndownKey);
function btndownKey(event:KeyboardEvent)
          if (event.keyCode == 83)
                    var url:String = "Savage.mp3";
                    var request:URLRequest = new URLRequest(url);
                    var s:Sound = new Sound();
                    s.addEventListener(Event.COMPLETE, completeHandler);
                    s.addEventListener(Event.ID3, onID3Info);
                    s.load(request);