Wow, I didn't expect such a detailed, serious answer!
Thank you so much!
You've shed a lot of light on this subject, from here I feel I can go on with this information!
I'm thinking of starting a website/mobile app that displays chords & lyrics to popular songs. I realize this normally requires licenses from the artists / licensing organizations such as CISAC or BMI. Would I also have to pay royalties per number of views ...