Heaven or Las Vegas is the sixth album by Scottish rock group Cocteau Twins, their last for the music label 4AD. In terms of chart positions, it is the most successful Cocteau Twins album, reaching number seven in the UK. The album is noteworthy for the musical evolution the band was showing at the time. The lyrics of vocalistElizabeth Fraser are more intelligible; many of them concern her newborn daughter Lucy Belle. Guitarist Robin Guthrie was experiencing problems with drug addiction, and as a result of his decreased time in the studio, bassist Simon Raymonde's playing is more in the forefront.