Spirits Having Flown is the Bee Gees' fifteenth original album, released in 1979. It was the group's first album after their collaboration on the Saturday Night Fever soundtrack. The album's first three tracks were released as singles which all went to no.1 in the US. It was also the first Bee Gees album to make the UK top 40 in ten years (not counting the soundtrack for Saturday Night Fever), as well as being their first and only UK no.1 album. It has sold 30 million copies worldwide.