Question: Which single did Release the Stars release is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright?

Context paragraphs:
Tiergarten (song): "Tiergarten" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright.  Released in October 2007, it was the third single from Wainwright's fifth studio album, "Release the Stars".  A limited edition (500 copies) 12" vinyl single containing "Supermayer Lost in Tiergarten" was released on October 27.  A one-track EP also containing the Supermayer remix was released in the UK through iTunes and 7digital on October 29.

Release the Stars: Release the Stars is the fifth studio album by Canadian-American singer-songwriter Rufus Wainwright, released through Geffen Records on May 15, 2007.  Pet Shop Boys' Neil Tennant was the executive producer; the album was mixed by producers Marius de Vries and Andy Bradfield.  Wainwright's most commercially successful album to date, "Release the Stars" charted in 13 countries, reaching Top 10 positions in Denmark, Norway, and the United Kingdom, and was certified gold in Canada and the UK.  The album generated three singles: "Going to a Town", which peaked at number 54 on the UK Singles Chart, "Rules and Regulations", and "Tiergarten".

The One You Love (Rufus Wainwright song): "The One You Love" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright.  It served as the first single from Wainwright's fourth studio album, "Want Two", and was released digitally in the UK on February 28, 2005.  Promotional singles distributed to radio stations contained both the album version and a radio edit.

Oh What a World (song): "Oh What a World" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright.  It was released as the second single from Wainwright's third studio album, "Want One" (2003), released digitally via iTunes and 7digital in the United Kingdom on November 8, 2004.  Promotional copies were also distributed to radio stations in an attempt to increase awareness of the song and album.  The song includes several arrangements from Maurice Ravel's Boléro.

House of Rufus: House of Rufus is a collection of six studio albums, two live albums (one being a double album), four additional albums of previously unreleased material, and six DVDs recorded by Canadian-American singer-songwriter Rufus Wainwright, reissued as a 19-disc box set in the United Kingdom on July 18, 2011.  Wainwright's official site claimed that the collection "spans Rufus' entire career and represents the most complete collection of Rufus Wainwright recordings to date."

Going to a Town: "Going to a Town" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright.  It was the first single from the album "Release the Stars", released on April 3, 2007, in the United States and on May 7 in the United Kingdom.

Waiting for a Want: Waiting for a Want is the first EP by Canadian-American singer-songwriter Rufus Wainwright, released through DreamWorks Records electronically on June 29, 2004.  At the time it was released, the collection previewed Wainwright's forthcoming album, "Want Two".  Initially planned to be released shortly after "Want One", after plans of a double album fell through, the purchase of DreamWorks by Interscope delayed the release of "Want Two".  The EP provided listeners with new material during this period.  Admitting that he wanted to release "a couple of ditties" before the United States presidential election of 2004, Wainwright described the collection as "some of the more daunting tracks, the operatic, weird stuff, some heavy numbers that relate to my classical sensibilities".

I Don't Know What It Is: "I Don't Know What It Is" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright.  It was the first single from Wainwright's third studio album "Want One" and was released in a slim-line jewel case format on July 26, 2004.

Rufus Wainwright (album): Rufus Wainwright is the eponymous debut studio album by Canadian-American singer-songwriter Rufus Wainwright, released in the United States on May 19, 1998 through DreamWorks Records.  The album was produced by Jon Brion, with the exception of "In My Arms", which was produced and mixed by Pierre Marchand, and "Millbrook" and "Baby", which were produced by Brion and Van Dyke Parks.  Lenny Waronker was the album's executive producer.

Rules and Regulations (song): "Rules and Regulations" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright.  It was the second single from Wainwright's fifth studio album, "Release the Stars", released digitally via iTunes in the UK on July 30, 2007.

Supporting paragraphs: Release the Stars Rules and Regulations (song)
Answer: "Rules and Regulations"