Playing speed changes over time, and the problem with continuous scroll is that musicians often need to look away from the music -- at their hands, feet, at oth

Playing speed changes over time, and the problem with continuous scroll is that musicians often need to look away from the music -- at their hands, feet, at other musicians or the conductor -- and if the music has moved in the meantime, it is disorientating and not useful. That's why a page-based model is still the only way to work, even when you think a scrolling model is more efficient.