In conservative Christian eschatology, the Rapture is the name given to an event in which Jesus Christ descends from Heaven, accompanied by the spirits of all the saints of God, both from the pre-incarnation period and after, who have passed on prior to this event, and then the bodily remains of these saints are transported from the Earth to meet the Lord and be rejoined with their corresponding spirits in the air. Immediately after this, all Christians alive on the earth are simultaneously transported to meet the Lord and those who have preceded them in the air. All are transformed into immortal bodies like Jesus' body, often referred to as the "resurrection body". This doctrine gained popularity in the 1830s, and more recently in the 1970s, with proponents of the premillenialist, and in particular the dispensationalist, interpretations of scripture. However, proponents of the doctrine have argued that it can be found in the early Church fathers and the New Testament.
I also find it weird that you have a band called The Rapture and on the first LCD Soundsytem album you have a track called Tribulations... And from my limited and patchy hearsay knowledge they would have been working together when their albums were released.
People tend to use the word when people or lots of something eg dogs go missing. Or it could just be all a subconcious thought on buying a computer game