Today David Howell Evans, better known by his stage name The Edge, turns 57.
The English-born Irish musician and songwriter best known as the lead guitarist, keyboardist and backing vocalist of U2 has been a member of the group since its inception.
As a guitarist, the Edge has crafted a minimalistic and textural style of playing. His use of a rhythmic delay effect yields a distinctive ambient, chiming sound that has become a signature of U2's music.
See how he does it....