I want to make a website hosting a large collection of sheet music from many different artists to be viewed online, but I have no idea how to go about getting permissions to do this. If I had to take the time to manually track down the information for every single artist, somehow contact them, and arrange something for each song... well, I'm sure you can guess that wouldn't be possible.
I've seen other sites (e.g. https://www.musicnotes.com) that offer a large amount of sheet music for sale; presumably, they have not contacted every artist individually. So there must be some organization responsible for managing music copyrights, that is able to make bulk arrangements. Who are they, and how do I find them?