Few rock bands have more hit songs than U2. The Irish quartet first landed on the charts with 1981's "I Will Follow" and continued all the way into the 21st century. But there are so many amazing tunes hiding slightly below the surface. Some are album cuts, B-sides or studio outtakes, while others were only played live a few times. With U2's new Songs of Innocence hitting iTunes for free last week, we asked our readers to vote on for their favorite lesser-known tracks. Here are the results.