"One" is the first single by Swedish house music group Swedish House Mafia. A vocal version titled "One (Your Name)", featuring American singer Pharrell Williams, was released in July 2010. The song also appears on the group's mix album Until One, and the studio album Until Now.

The song debuted on BBC Radio 1 with Zane Lowe and was chosen as the hottest record in April 2010. "One" peaked at number two in Belgium (Flanders) and on the UK Dance Chart. It reached number one in the Netherlands, number seven in Ireland and in the United Kingdom on the UK Singles Chart. It also charted in Sweden, Switzerland, Denmark, Austria and Germany. A video directed by the Swedish directors Henrik Hanson and Christian Larson supported the release.

"One" was written and produced by Axwell, Steve Angello and Sebastian Ingrosso. The lyrics in "One (Your Name)" are written by Pharrell Williams. According to Angello the vocals were recorded in Australia over a year, prior to the release, and were initially intended for another song. He said, "We took that and tried it on One and it worked. Well, it worked after Axwell Melodyne'd the crap out of it! [...] it's kind of old skool, chopping up one vocal and turning it into a whole dance track.".

According to an interview in Future Music magazine (issue 229), the track was composed in Logic using various plug-ins. Pharrell's vocals were heavily processed in Melodyne and the final track was mixed and mastered at Metropolis Studios London on an SSL console.

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