In reimagining 40 of their best-known songs, U2 recognized that many fans would experience them through earphones connected to a device in their pockets — rather than being belted out onstage.
That was one thought behind “Songs of Surrender,”coming out this week. The four men of U2, now either 61 or 62 years old, revisit material written in some cases when they were little more than kids out of Dublin.
