it was actually mostly for the Stones. Tons of musicians use lyric sources. I use sheet music. It's totally not uncommon. And truthfully, it was mostly for Mick. But don't get me wrong! I adore the Stones. :)
lo screen è in tutti i concerti dei Rolling Stones EPIC FAIL, GAGA DURANTE LA PERFORMANCE NON GUARDA NEANCHE UNA VOLTA GLI SCHERMI, ALCUNI LITTLEMONSTERS SONO DAVVERO STUPIDI..
Uh who cares? Are you trying to say she's not real because there was a screen with lyrics as she was a guest performer at another artist's concert... really...?
most artists usually have screens like this when performing, along with setlists posted to the floor. politicians also have cheat sheets when giving speeches too