模块中未找到类错误

Question

I have 3 modules in my application: Patients, Songs, PatientSongs

I want Songs url to display all songs. I want Patients url to display all patients.

For PatientSongs I would like to show the result of a join in the songs table.

My Module in PatientSongs is configured ad below:

return array(
        'factories' => array(
            'Songs\Model\SongsTable' =>  function($sm) {
                $tableGateway = $sm->get('SongsTableGateway');
                $table = new SongsTable($tableGateway);
                return $table;
            },
            'SongsTableGateway' => function ($sm) {
                $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
                $resultSetPrototype = new \Zend\Db\ResultSet\ResultSet();
                $resultSetPrototype->setArrayObjectPrototype(new \Songs\Model\Entity\Song());
                return new TableGateway('songs', $dbAdapter, null, $resultSetPrototype);
            },

        ),
    );

Im getting an error that reads Fatal error: Class 'Songs\Model\Entity\Song' not found in C:\xampp\htdocs\zf2-tutorial\module\PatientSongs\Module.php on line 41.

My module structure for Songs is Songs\src\Songs\Model\SongsTable and Songs\src\Songs\Model\Entity\Song

I cant figure out why it cant find this path.

Can anyone help?