This is a vocal or instrumental accompanyment track to sing or play along with.... Unlike most accompanyment tracks that only are availible in a high and low key .. Our tracks come in all twelve. This makes it possible to use the full range and potental of your performance... Use these tracks in church, for school, live performance or anywhere that full unembelshied accompanymentis needed. The demo track is used as a referance for the perfomer if he or she is unsure where to sing and or play. Once you know the arrangement, try the differnt keys and pick the one that sounds best for your voice and or instrument... We believe our tracks to be of the best and highest quality available.. We hope these tracks are a blessing to you and your family providing enjoyment and hours of entertainment to share.