Since their inception, U2 have developed and maintained a distinctly recognisable sound, with emphasis on melodic instrumentals and expressive, larger-than-life vocals. Throughout their career, as a band and as individuals, they have become almost as well-known for their humanitarian efforts as they are for their music. Their seminal album, The Joshua Tree, is the fastest-selling album in British chart history and won the band their first two Grammys; they have since won more Grammys than any other band. Their latest album, No Line On The Horizon, debuted at #1 in 28 countries around the world.