public function getTopArtists($methodVars)
    {
        $vars = array(
            'method' => 'chart.gettopartists',
            'api_key' => $this->auth->apiKey
        );
        $vars = array_merge($vars, $methodVars);

        if ($call = $this->apiGetCall($vars)) {
            $i = 0;
            foreach ($call->artists->artist as $artist) {
                $topArtists[$i]['name'] = (string) $artist->name;
                $topArtists[$i]['playcount'] = (string) $artist->playcount;
                $topArtists[$i]['listeners'] = (string) $artist->listeners;
                $topArtists[$i]['mbid'] = (string) $artist->mbid;
                $topArtists[$i]['url'] = (string) $artist->url;
                $topArtists[$i]['streamable'] = (string) $artist->streamable;
                $topArtists[$i]['image']['small'] = (string) $artist->image[0];
                $topArtists[$i]['image']['medium'] = (string) $artist->image[1];
                $topArtists[$i]['image']['large'] = (string) $artist->image[2];
                $topArtists[$i]['image']['extralarge'] = (string) $artist->image[3];
                $topArtists[$i]['image']['mega'] = (string) $artist->image[4];
                $i++;
            }

            return $topArtists;
        } else {
            return false;
        }
    }