YQL Data Table to scrape last.fm "Top Tracks" by Tag.

lastfm.yql.data.table.xml

<?xml version="1.0" encoding="UTF-8" ?>
<table xmlns="http://query.yahooapis.com/v1/schema/table.xsd">
    <meta>
        <description>Retrieves the Top Tracks, by tag, from Last.fm</description>
        <author>Anthony Sterling</author>
    </meta>
    <bindings>
        <select produces="JSON">
        <inputs>
            <key id="tag" as="tag" type="xs:string" paramType="query" required="true"/> 
        </inputs>
        <execute><![CDATA[
            var results = y.query("select content from html where url=\"http://www.last.fm/tag/" + tag + "/tracks\" and xpath='//td[@class=\"subjectCell\"]/div//a[not(contains(@href, \"download\"))]'").results.*;
            var tracks = [];
            var track = null;
            for each (var item in results)
            {
                var item = item.toString();
                
                if(null == track)
                {
                    track = { artist: item, title: null };
                    continue;
                }
                
                track.title = item;
                tracks.push(track);
                track = null;
            }
            response.object = {track: tracks};
        ]]></execute>
        </select>
    </bindings>
</table>