"It can be frustrating at times when they sometimes take a song and work it into the ground, then work it back to life again. That's what happened with Stand Up Comedy. I was thinking the other day that Edge has probably heard the song more times than even the most dedicated U2 fan ever will."
- Brian Eno on U2's recording proces
U2 has sold approximately 50.5 million albums in the U.S., according to the RIAA, and upwards of 170 million worldwide.