The Human League are an English electronic New Wave band formed in Sheffield in 1977. They achieved popularity after a key change in line-up in the early 1980s and have continued recording and performing with moderate commercial success throughout the 1980s up to the present day. The only constant band member since 1977 is vocalist and songwriter Philip Oakey. Originally an avant-garde all-male synthesizer-based group, The Human League evolved into a commercially successful synthpop band under Oakey''s leadership, yielding the group''s biggest-selling album, Dare (1981). Since 1987, the band has essentially been a trio of Oakey and long-serving female vocalists Joanne Catherall and Susan Ann Sulley (who joined the ensemble in 1980), with various sidemen. The Human League has influenced many electro-pop, other synthpop, and mainstream performers including Madonna, La Roux, Moby, Pet Shop Boys, and Little Boots. They have been sampled and covered by various artists including Tony Christie, Utah Saints, Ministry of Sound, Craig David, George Michael, KMFDM, Robbie Williams and Out of the Blue (Oxford University).