Adam Charles Clayton is a British-Irish musician who is the bass guitarist of the rock band U2. He has resided in County Dublin, Ireland since his family moved to Malahide in 1965, when he was five years old. Clayton attended Mount Temple Comprehensive School, where he met schoolmates with whom he co-founded U2 in 1976. A member of the band since its inception, he has recorded 15 studio albums with U2.

"New Year's Day" is a song by Irish rock band U2. It is the third track on their 1983 album War and was released as the album's lead single in January 1983. With lyrics written about the Polish Solidarity movement, "New Year's Day" is driven by Adam Clayton's distinctive bassline and the Edge's piano and guitar playing. It was the band's first UK hit single, peaking at number 10, and was also their first international hit, reaching for number 9 in Norway, number 11 on the Dutch Top 40, number 17 in Sweden, and number 53 on the Billboard Hot 100 in the United States, becoming the band's first single to chart in the US.