$alphabet = $_GET['alphabet'];
$id = mysqli_real_escape_string($conn,$id);
$query = "SELECT * FROM `lyrics` WHERE `alphabet`='" . $alphabet . "'";
इसके साथ बदलें:
$alphabet = mysqli_real_escape_string($conn,$_GET['browse']);
$query = "SELECT * FROM `lyrics` WHERE `alphabet`= '" . $alphabet . "' ";