Open Media Collectors Database

While reading the source of the FreeDB site plugin class (freedb.class.php)
(I'm creating a search plugin for eMusic.com), i noticed the following
piece of code (line 199)

$tracks = $this->parseTracks($entryBlock);
if(is_array($title_r))
{
$this->addItemAttribute('tracks', $tracks);
}

is it correct that you check if $title_r is an array while you are
processing the tracks? i guess it makes more sense if it would be
is_array($tracks), unless i missed something...