"Bono came up with the lemon. When he's improvising over a piece of music he is at his most creative. Often you're scratching your head, thinking, 'What psychedelic substances is he on that he would even dream up something like that?'"
- Edge on Lemon
did you know
The song Heartland is about a trip Bono and Adam made after the Joshua Tree tour through America by car, they passed many placed and states and Heartland contains phrases of Bono's journey of that trip.