We are working on a solution to learn the piano, like this one, or this one.
I have read that for each song that I will add on the platform, I'll need to have the permission of the artist (and we will probably need to pay a fee each time a song is played or something like this). Is it true even if we are not playing sound on the platform? (We will just show lights from our physical object to indicate the pianist how to play a song). Or is it considered as fair use?
If it is the case, is there a way to have a contract with a lot of artists easily? Or do we need to contact each artist individually?