Alt-J is a British band formed in 2007, known for their unique blend of indie rock, folk, and electronic music. The group consists of members Joe Newman, Gus Unger-Hamilton, and Thom Green. They gained popularity with their debut album, An Awesome Wave, released in 2012, which won the Mercury Prize. The band's sound is characterized by intricate harmonies, unconventional song structures, and the use of various instruments. Their follow-up albums, including This Is All Yours and Relaxer, further showcased their experimental style and lyrical depth, earning them a dedicated fan base and critical acclaim.