"Peace on Earth" is a song by rock band U2 and the eighth track on their 2000 album All That You Can't Leave Behind. Its lyrics were inspired by the Omagh bombing in Northern Ireland on 15 August 1998. The song lists the names of people killed in the bombing. Similarly, inspiration for the lyric, "She never got to say goodbye / To see the colour in his eyes / Now he's in the dirt" comes from the funeral of James Barker, another victim of the bombing. The Irish Times quoted his mother as stating, "I never realised how green his eyes were." After the September 11, 2001 attacks, "Peace on Earth" took on additional meaning and consequently was used as an encore song during the band's Elevation Tour, coupled with "Walk On". The two songs were similarly paired during the band's performance on the telethon America: A Tribute to Heroes. Writing and recording "Peace on Earth" was written in response to the Omagh bombing of 15 August 1998, the same day that it occurred. The attack, which was committed by the paramilitary group the Real Irish Republican Army, killed 29 people. Lead singer Bono was dismayed by the event, calling it "the lowest day of my life, outside of personal losses". Earlier that May, U2 had performed at a Yes Campaign event supporting the Good Friday Agreement to end the violence of the Troubles; the agreement was approved three days later. Bono feared the bombing would be the end of the Northern Ireland peace process. During the holiday season that year, he felt that: "the whole 'peace on earth, goodwill to all men' struck a sour note. It was hard to be a believer that Christmas." Guitarist the Edge said that "Peace on Earth" came together rather quickly, as he had pre-written the music and then Bono developed his vocal part at the microphone. The Edge used a DigiTech Whammy effect pedal on the song to create "this bizarre, atmospheric, almost Chinese-sounding" guitar tone. He described the part as a "5th below and a 4th above". Throughout the songwriting process, the Edge was sceptical of a lyric in the song ("I'm sick of hearing again and again that there's gonna be peace on earth"), believing it to be too cynical and that the line should have been changed to "that there's never gonna be peace on earth". The song