传递参数的骨干js

我刚开始阅读Backbone js，在Backbone js中传递参数时遇到了一些严重问题。

var Song = Backbone.Model.extend();
var Songs = Backbone.Collection.extend({
  model: Song
});
var SongView = Backbone.View.extend({
  el: "li",
  render: function() {
    this.$el.html(this.model.get("title"));
    return this;
  }
});
var SongsView = Backbone.View.extend({
  el: "ul",
  initialize: function() {
    this.model.on("add", this.onSongAdded, this);
  },
  onSongAdded: function(song) { // when object is added to  a collection add event is triggerd 
    // the handler for this event get an argument which is the object that was just added
    //in this case it refers to a song model so we simply pass it to our songView which is responsible for rendering a song an then we use jquery append method 
    // to append it to our list
    var songView = new SongView({
      model: Song
    });
    this.$el.append(songView.render().$el);
  },
  render: function() {
    var self = this;
    this.model.each(function(song) { //
      var songView = new SongView({
        model: Song
      });
      self.$el.append(songView.render().$el);
    });
  }
});
var songs = new Songs([
  new Song({
    title: "1"
  }),
  new Song({
    title: "2"
  }),
  new Song({
    title: "3"
  })
]);
var song_1 = new Song({
  title: "hello"
});
var songsView = new SongsView({
  el: "#songs",
  model: Songs
});
songsView.render();

正如你所看到的，我有这个功能：onSongAdded我们有一些内置的事件，如add，它可以获得3个参数，如下所示：添加（集合、模型、选项）如何在代码中使用这些参数？你能帮我吗？