$this->db->select($this->_table.'.*, u1.full_name AS singer_name, u2.full_name AS composer_name, track_user.name AS singer_name2, track_artists.name AS composer_name2');
print_r($name);
$this->db->select($this->_table.'.*, u1.full_name AS singer_name, track_user.name AS singer_name2,
tracks.title AS name_song, GROUP_CONCAT(track_user.`name` SEPARATOR ",") AS all_name, tracks.art AS art');
$this->db->select($this->_table.'.*, u1.full_name AS singer_name, u2.full_name AS composer_name, track_user.name AS singer_name2, track_artists.name AS composer_name2');
$this->db->select($this->_table.'.*, u1.full_name AS singer_name,
track_user.name AS singer_name2, tracks.title AS name_song,
GROUP_CONCAT(track_user.`name` SEPARATOR ",") AS all_name, tracks.art AS art');
$this->db->select($this->_table.'.*, u1.full_name AS singer_name, u2.full_name AS composer_name, track_user.name AS singer_name2, track_artists.name AS composer_name2');
$this->db->select($this->_table.'.*, u1.full_name AS singer_name, track_user.name AS singer_name2,
tracks.title AS name_song, GROUP_CONCAT(track_user.`name` SEPARATOR ",") AS all_name, tracks.art AS art');