High Quality Content by WIKIPEDIA articles! The Joshua Tree is the fifth studio album by rock band U2. It was produced by Daniel Lanois and Brian Eno, and was released on 9 March 1987 on Island Records. In contrast to the ambient experimentation of their 1984 release The Unforgettable Fire, U2 aimed for a harder-hitting sound on The Joshua Tree within the limitation of strict song structures. The album is influenced by American and Irish roots music and depicts the band`s love-hate relationship with the United States, with socially and politically conscious lyrics embellished with spiritual imagery.