I like it. I have a few suggestions (full disclosure: I haven't played music since high school).
It would be nice if the key and time signature could remain onscreen as the sheet scrolls.
I think my preferred solution for scrolling would be to have the position marker move until it hits the center, then have the position stay centered while the sheet scrolls until it hits the end. I'm not sure what the correct way to handle repeats in my scenario would be--perhaps have the sheet stop scrolling when it hits a repeat.
I think having the key / time signature "stick" makes a lot of sense... I will work on that. The only thing to look out for is key signature / time signature changes, and make sure those get captured too and that they stick...
As for scrolling, it seems like that is a feature that some people might prefer. I will most likely add that as a feature to it.
I think having the page stay still for the majority of the time (like it is now) is better than to have it constantly moving, but when you do change pages, scroll to the new position (ease-in, maybe ease-out too).
Removes the disorienting jolt of having everything just change, but also not always moving and being a distraction
It would be nice if the key and time signature could remain onscreen as the sheet scrolls.
I think my preferred solution for scrolling would be to have the position marker move until it hits the center, then have the position stay centered while the sheet scrolls until it hits the end. I'm not sure what the correct way to handle repeats in my scenario would be--perhaps have the sheet stop scrolling when it hits a repeat.