Here you go: http://jsfiddle.net/Cardiff/Y5kwM/
There are several errors here:
var multiView = Backbone.Marionette.CompositeView.extend({
tagName:'ul',
itemView:oneView
});
You need to provide a template to a compositeView, otherwise use a collectionview.
var listView = new multiView({collection:data});
You can't just set an array as a collection. You need a valid backbone collection (see fiddle).