Regex to match square brackets at end of string

gistfile1

			$v = "Muse - Supermassive Black Hole[Dubstep Version][muse.mp3]";
			
			//Match ending [], that contains .mp3
			preg_match("/\[([^]]*.mp3+)\]$/i", $v, $match);

			//Remove [] from matched string
			$track_url = preg_replace('/[[\]]/', '', $match[0]);

			//Remove mp3 link from title
			$track_title = preg_replace("/\[([^]]*.mp3+)\]$/i", '', $v);