U2 is an iconic rock band formed in Dublin, Ireland, in 1976. The band consists of Bono, The Edge, Adam Clayton, and Larry Mullen Jr. They rose to fame in the 1980s with their unique sound that blends rock with spiritual and political themes. Their album 'The Joshua Tree' (1987) solidified their status as one of the world's biggest bands, featuring hits like 'With or Without You' and 'I Still Haven't Found What I'm Looking For.' U2 is known for their powerful live performances and activism, particularly in human rights and social justice. Over the years, they have won numerous awards, including multiple Grammy Awards, and continue to influence generations of musicians.