"Young Folks" is the first single from Peter Bjorn and John's third album, Writer's Block (released in 2006). The single features Victoria Bergsman as a guest vocalist.

The song first attracted notice on websites such as Myspace and YouTube, and was used in a number of European commercials and television shows. Since mid-2007, the song has earned extensive airplay on American radio, most notably on dance radio outlets like KNHC/Seattle, KNGY/San Francisco and Sirius Satellite's The Beat. It is notable for being a popular song with whistling (the whistling was originally added in as a placeholder for another instrument). The whistling and part of the song have a tune reminiscent of the "oriental riff".

The song was ranked #5 on Pitchfork Media's Top 100 Tracks of 2006 list. Pitchfork reviewed the song on 19 July 2006, giving it three out of five stars. The song was also voted #2 in the 2006 NME Track of the Year poll.Planet Sound named this their #2 single of 2006. The song was named the number one song of 2007 according to the iTunes Store. Y-Rock On XPN also named the song #1 of 2007. In October 2011, NME placed it at number 92 on its list 150 Best Tracks of the Past 15 Years. It was included in Spinner's 10 Best Whistling Parts in Songs.Rolling Stone put the song also on its list of the 15 Best Whistling Songs of All Time.

The single was re-released on 17 September 2007, when it reached number 13 in the UK, beating the original chart position of number 33 in 2006.

The video was directed by Ted Malmros with animation by Graham Samuels. It is featured in the video game SingStar Pop 2, as well as in Lips.

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