Question: The Sia song "ustoppable" is on her album released on what date?
Context: Lady Croissant is a live album by Australian singer Sia, released in April 2007 through the record label Astralwerks.  Called a "mini-album" by Astralwerks, the collection contains one studio recording ("Pictures") as well as eight live tracks recorded during an April 2006 concert at the Bowery Ballroom in New York City.  Eight songs were written or co-written by Sia; also featured is a cover version of Ray Davies' song "I Go to Sleep", a studio recording of which later appeared on Sia's studio album "Some People Have Real Problems" (2008).  The album was produced by Dan Carey, mixed by Jon Lemon and Taz Mattar at Sarm Studios in London, and mastered by Emily Lazar and Sarah Register at The Lodge in New York City.  "Lady Croissant" received a mixed critical reception and spawned one single, "Pictures", which was released exclusively via American Eagle Outfitters on 27 November 2006. "You've Changed" is the lead single released from Sia Furler's 2010 album "We Are Born".  "You've Changed" was originally co-written and released in 2008 by American DJ/producer Lauren Flax, which was then re-recorded for Sia's 2010 album, "We Are Born".  The single was announced through a Twitter update that Sia posted.  The song was given away for free and was released on 28 December 2009.  On 31 January 2010 the song peaked at number 31 on the Australian ARIA Singles Chart, becoming Sia's highest charting single on that chart until her 2014 hit Chandelier.  The song was placed 72 on the Triple J Hottest 100 countdown in 2009. "Alive" is the lead single from Australian singer and songwriter Sia's seventh studio album "This Is Acting" (2016).  It was co-written by Sia, Adele, and Tobias Jesso Jr. The song was produced by Jesse Shatkin.  "Alive" was released on 25 September 2015.  The song was originally intended for Adele's third studio album, "25", along with "Bird Set Free".  However, since Adele decided not to use the songs, she let Sia use them for her seventh studio album.  Musically, it is a midtempo pop and synth-pop song. Some People Have Real Problems is the fourth studio album by Australian singer Sia.  Released in 2008, the album featured singles including "Day Too Soon", "The Girl You Lost to Cocaine" and "Soon We'll Be Found".  In live performances of the latter song, Sia used sign language to accompany her singing.  The album displays a more upbeat pop-style than Sia's previous downbeat albums, whilst show-casing Sia's vocals on a number of big ballads.  Non-single track, "Buttons", received attention due to its video in which Sia's face is distorted by pegs, string, net, condoms and many other things.  The album debuted at number 26 on the US "Billboard" 200 chart which became Sia's first album to chart on the "Billboard 200" in her career. "Chandelier" is a song by Australian singer Sia from her sixth studio album, "1000 Forms of Fear" (2014).  Written by Sia and Jesse Shatkin and produced by Shatkin and Greg Kurstin, the song was released on 17 March 2014 as the lead single from the album.  It's an electropop song, featuring electronica, R&B and reggae influences.  Lyrically, the song has a melancholic theme, detailing the demoralisation and rationalisation of alcoholism through the typical thought process of a "party girl". This Is Acting is the seventh studio album by Australian singer and songwriter Sia.  It was released on 29 January 2016 by Inertia, Monkey Puzzle and RCA Records.  The album is mostly composed of songs written by Sia for other pop artists that were not included on their albums.  Sia described songwriting for others as "play-acting," hence the title "This Is Acting". "The Whisperer" is a song by French DJ and producer David Guetta, featuring the vocals of frequent collaborator, Australian singer Sia, taken from the former's sixth studio album, "Listen".  It was released, along with the album, on 24 November 2014.  The song features Sia on vocals, and the song is noted as one of the standout tracks from the album, due to the absence of any synths, or electro house production, the other being "I'll Keep Loving You" that features Birdy and Jaymes Young, however that song features minimal synths.  The song is the fourth collaboration between Guetta and Sia, the others being the commercially successful "Titanium," another successful, but not as successful as the former, "She Wolf (Falling to Pieces)," and "Bang My Head," which is featured on "Listen".  It has charted in France. "Unstoppable" is a song by Australian singer-songwriter Sia Furler (often referred to mononymously as Sia), taken from her seventh studio album "This Is Acting" (2016).  The song was written by Sia and Christopher Braide, and produced by Jesse Shatkin.  It was released as the album's final promotional single on January 20, 2016.  In July, a new version of the song was made for Gillette's 2016 Olympic ad campaign, "Pretty Isn't Perfect" which features a verse from Pusha T. "Titanium" is a song by French DJ and music producer David Guetta, featuring vocals by Australian recording artist Sia.  Taken from Guetta's fifth studio album, "Nothing but the Beat", the song was written by Sia, David Guetta, Giorgio Tuinfort and Afrojack.  Production was also handled by Guetta, Tuinfort and Afrojack.  "Titanium" was initially released for digital download on August 8, 2011, as the first of four promotional singles from the album.  It was later released as the album's fourth single in December 2011.  The song originally featured the vocals of American recording artist Mary J. Blige, whose version of the song leaked online in July 2011. "Bang My Head" is a song by French DJ and music producer David Guetta, featuring vocals from Australian singer Sia and American rapper Fetty Wap.  It was released as the second single from the re-release of Guetta's sixth studio album, "Listen".  "Bang My Head" tallies as the album's seventh single overall.  It was released via digital download on 30 October 2015.  The original album version of the song only featured Sia's vocals, but the second verse was later replaced with vocals from Fetty Wap for the reworked single release.
Answer: 29 January 2016