If I form a student jazz band, and I view our job as to play the masterpieces of the past, I will teach those musicians in a very different way than if I believe I am teaching them to play music of the present moment.
It also could have a negative effect on the music. If I form a student jazz band, and I view our job as to play the masterpieces of the past, I will teach those musicians in a very different way than if I believe I am teaching them to play music of the present moment.