Question: On what album, which previewed Rufus Wainwright's forthcoming album, "Want Two" did the song "Gay Messiah" appear?

Context paragraphs:
Want (Rufus Wainwright album): Want is a repackaged double album by Canadian-American singer-songwriter Rufus Wainwright, released in the United Kingdom on November 28, 2005.  It contains all the tracks from both "Want One" and "Want Two", along with two bonus tracks: a cover of Leonard Cohen's "Chelsea Hotel No. 2" along with "In with the Ladies".

The Art Teacher: "The Art Teacher" is a song written and performed by American-Canadian singer-songwriter Rufus Wainwright.  It originally appeared on his EP, "Waiting for a Want", released by DreamWorks Records in June 2004 as a preview of his fourth studio album, "Want Two", which was released by Geffen Records in November 2004.  The lyrics in the piano ballad describe a middle-aged woman's recollection of an unrequited love for her teacher.  The song explores gender and sexuality, and its music has been compared to work by Philip Glass.

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."

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.

Vibrate: The Best of Rufus Wainwright: Vibrate: The Best of Rufus Wainwright, sometimes referred to simply as Vibrate: The Best Of, is the greatest hits album by American-Canadian singer-songwriter Rufus Wainwright, released on February 28, 2014 in Australia and Ireland by Universal Music Enterprises and in other nations subsequently.  The standard issue of the album includes eighteen songs from six of Wainwright's studio releases, including his self-titled debut album (1998), "Poses" (2001), "Want One" (2003), "Want Two" (2004), "Release the Stars" (2007) and "Out of the Game" (2012), plus soundtrack contributions and one previously unreleased track ("Me and Liza").  The deluxe version includes a bonus disc with sixteen rare and unreleased recordings, both live and studio recorded.  Featured are "Chic and Pointless", previously unreleased and produced by Guy Chambers, and "WWIII", a song that was co-written by Chambers and had not been released in a physical form until "Vibrate".

Want Two: Want Two is the fourth album by American-Canadian singer-songwriter Rufus Wainwright.  The album was released on November 16, 2004.  Four of the tracks on this album were released in the summer of 2004 as the EP "Waiting for a Want" on the iTunes music store.

Gay Messiah: "Gay Messiah" is a song written and performed by American-Canadian singer-songwriter Rufus Wainwright.  It originally appeared on his EP, "Waiting for a Want", which was released by DreamWorks Records in June 2004 as a preview of his fourth studio album, "Want Two", which was released by Geffen Records in November 2004.

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".

Rufus Wainwright discography: The discography of Rufus Wainwright, a Canadian-American singer-songwriter, consists of seven studio albums, three live albums, three compilations, three extended plays (EPs), three video albums, nine singles, and nine music videos. Wainwright's self-titled debut album was released through DreamWorks Records in May 1998.  Although his success was limited, Wainwright reached #24 on "Billboard's" Top Heatseekers chart, and "Rolling Stone" named him 1998's Best New Artist.  Wainwright's second album, "Poses", was released through the same label in June 2001, resulting in the #1 position on the Heatseekers Chart and #117 on the "Billboard" 200.  With material recorded from the same session, "Want One" was released through DreamWorks in September 2003, and "Want Two" was released through Geffen Records in November 2004.

The Best of Rufus Wainwright: The Best of Rufus Wainwright is an ongoing concert tour by American-Canadian singer-songwriter Rufus Wainwright in support of his greatest hits album, "" (2014).  The tour was announced on Wainwright's official website in December 2013, initially for 23 performances in more than 20 countries throughout Europe during March–April 2014.  Subsequent dates were added in France, the United States and the United Kingdom, extending the number of concerts to 31.  Wainwright's half-sister, Lucy Wainwright Roche, has been confirmed as the opening act for select dates.

Supporting paragraphs: Gay Messiah Waiting for a Want
Answer: Waiting for a Want