Now you can experience Mastertrax original artist's masters in three keys! Unlike other accompaniment tracks. Mastertrax is the only track line that gives you these performance options: You can sing with the artist's original background vocal track, or perform with the original (no background vocal) track in high, medium or low. You can use these songs at home, church or in your own concerts. Mastertrax has a fresh new look, sound and format to offer you the most contemporary songs in the keys you need!