I would like to see a store like an option where I could buy the sheet music for any song. Along with getting the sheet music, it would be tabbed out in Yousician format. Purchasing a song would include as many instruments as possible in the Yousician format. Then Yousician would form a library of songs you've purchased. The library would be similar to an iTunes library and would be searchable and able to be categorized. Yousician is the best way to learn music and people want to learn the songs they love. This gives people the songs they love and Yousician another revenue stream. The songs would have to be cheap for this to work, like $0.99 or $1.99. Hopefully we can see this happen.
Yes. It could be a zone in Yousician site where you choose the instrumentos and you have the music sheets of all songs in Yousician (maybe including The Yousicians's songs) and you can buy the sheet music of a song. When you buy a shett music it should be downloaded or sent to your email, if you're not using a computer. Or, in Yousician, there could be a shop where you can buy songs (popular or user created) by point that you win in Yousician. You must buy that songs to be able to play them. Or, in the app, there could be a shop where you can buy the sheets of all songs, also with points. The songs that you bought will also be sent to your email or Facebook. Harder songs cost more points.
Dave S commented
I'm hoping they work out a licensing subscription deal with the music publishers. Monthly fee for access to ALL published works. - Just like Apple Music as an add on - call it Yousician Pro. Would get rapid conversion to YS format too.