The song is their own composition but to see how others interpreted it they asked four other singer-songwriters - Mattias Alkberg, Ulf Stureson, Johan Borgert and Annika Norlin - to record versions of it without having heard the original song beforehand. The results are on Nord & Syd's website but obviously I can't resist putting Annika Norlin's version up here, what with being a massive fanboy and all.
Here's another single - my favourite - from the album, Min Arm. This song is, quite simply, irresistible!
Buy Som en människa on CD here or download the mp3 album here