Question - is there a limit as to how many pages you can load up on a piece of sheet music in my store? It will only let me do about 12.

You can change this with code or with the dataset itself that you are using

for the dataset: Click on it, click manage dataset, scroll down and you will see limit, change this to however much you want

for code: https://www.wix.com/code/reference/wix-data.WixDataQuery.html#limit

Goodluck,
Majd