Array
(
    [artist] => Green Day
    [track] => American Idiot
    [tags] => Array
        (
            [0] => Array
                (
                    [name] => testing
                    [url] => http://www.last.fm/tag/testing
                )

            [1] => Array
                (
                    [name] => test
                    [url] => http://www.last.fm/tag/test
                )

        )

)