"We're booking the tour in pairs of shows. We want to have two different shows. That's the plan at this point, but it could all change."
- Adam on the potential Songs of Innocence tour
In the live performance of 'The Electric Co.' from 1983's Under A Blood Red Sky, Bono sang a snippet of Stephen Sondheim's 'Send In The Clowns'. U2 had failed to get permission for this 27-second snippet and later agreed to pay a $50,000 penalty as well as removing the snippet from later pressings.