$artist = 'feist';
if (strlen($artist) > 75) {
    $artist = substr($artist,0,75);
} 

$artist2 = str_replace(" ","",$artist);

$url= 'http://ws.audioscrobbler.com/1.0/artist/' . $artist2 . '/similar.xml';
$xml = simplexml_load_file("$url");

print '<img src="'. $xml->similarartists['picture'] . '" />';exit;