Question: When was the singer of "Crank That (Soulja Boy)" featured on a mixtape by Tinie Tempah?

Context paragraphs:
Turn My Swag On: "Turn My Swag On" is a song written and recorded by American rapper Soulja Boy Tellem.  It was released in December 2008 as the third single from his 2008 album "iSouljaBoyTellem".  It was performed at the 2009 BET Awards.  The song topped the US Rap Charts and peaked at number 19 on the Hot 100.  it has so far sold over 1,000,000 digital downloads in the US.  It became Soulja Boy's third song to sell 1 million or more downloads, after "Kiss Me Thru The Phone" and "Crank Dat (Soulja Boy)".

Crank That (Soulja Boy): "Crank That (Soulja Boy)" is the debut single by American rapper Soulja Boy Tell'em.  It served as the lead single from his debut studio album, "souljaboytellem.com" (2007) and accompanies the Soulja Boy dance.  The song is recognized by its looping steelpan riff.  It caused what has been called "the biggest dance fad since the [mid-1990s] Macarena", with an instructional YouTube video for the dance surpassing 27 million views by early 2008.

Soulja Girl: "Soulja Girl" is the second single by American rapper Soulja Boy's studio album "souljaboytellem.com".  The song features R&B group i15.  The song peaked at #32 on the Billboard Hot 100.  Although the song was a top 40 hit in the United States and New Zealand, it did not follow the success of the last single, "Crank That (Soulja Boy)" in other countries.

All About She: All About She are an English band from London, England.  The band consists of record producers James Tadgell and Jon Clare, and singer Vanya Taylor.  They are signed to Tinie Tempah's record label Disturbing London and have worked several times with him as well as other artists on the label.  Tadgell and Clare, who have both previously worked with Devlin and Scorcher, wrote and produced "Intro", which opens Tinie Tempah's debut album "Disc-Overy."  Vanya provided vocals for Tinie's hit single "Simply Unstoppable" and Roska's song "Desire".  Taylor has also performed backing vocals for Jessie J, and All About She created a remix of her single "It's My Party" for the deluxe edition of her second album, "Alive".  They also collaborated with Calvin Harris on a song from his fourth album, "Motion" (2014).

Ester Dean: Esther Renay Dean (born April 15, 1982), known professionally as Ester Dean, is an American singer, songwriter, record producer, and actress.  Her 2009 single "Drop It Low" featured singer Chris Brown.  Dean has also co-written songs for many artists including Christina Aguilera, Florence + The Machine, Katy Perry, Beyoncé, Nicole Scherzinger, Priyanka Chopra, Mary J. Blige, Nicki Minaj, Kelly Clarkson, Ciara, The Pussycat Dolls, Usher, Kelly Rowland, Girlicious, Keri Hilson, Rihanna, R. Kelly, Britney Spears, Melody Thornton, Vanessa White, Kevin McHale, Selena Gomez, G.R.L., Soulja Boy Tell 'Em, Little Mix, Pia Toscano, Tinie Tempah, Lil Wayne, Machine Gun Kelly, Fifth Harmony, and Eurovision Song Contest 2012 winner Loreen.

Happy Birthday (mixtape): Happy Birthday is the fourth mixtape released by British rapper Tinie Tempah.  The mixtape was released for free download on December 16, 2011 on Disturbing London Records - featuring production from 3Mindz, S-X, Wizzy Wow and Stargate.  The mixtape title is "Happy Birthday" because the mixtape came into production around Tempah's 23rd birthday (November 7).  Tracks "Like It or Love It", "Lucky Cunt" and "Till I'm Gone (Remix)" were leaked prior to the mixtape release to create buzz, with "Like It or Love It" receiving minor radio airplay.  "Happy Birthday" features British rappers Chipmunk, Giggs, Wretch 32, G-Frsh, Tinchy Stryder and Krept and Konan, including a variety of American rappers; Soulja Boy, J. Cole and Big Sean, along with Wiz Khalifa, Pusha T and Jim Jones on the "Till I'm Gone" remix (originally released on August 29, 2011).  British vocalist J. Warner also makes a guest appearance.

Wonderman (Tinie Tempah song): "Wonderman" is the sixth single by English rapper Tinie Tempah.  It features vocals by English singer Ellie Goulding and is the fifth official single from Tinie's debut album, "Disc-Overy", being the second song to be released as a single following the release of the album – the first being "Invincible".  The song was produced by long-time collaborator Labrinth.  who has also worked with Tinie Tempah on "Pass Out" and "Frisky", and mixed by James F Reynolds, who mixed the entire "Disc-Overy" album.  The single released on 7 March 2011.  The single has peaked at number twelve on the UK Singles Chart.

Souljaboytellem.com: Souljaboytellem.com is the debut studio album by American hip hop recording artist and producer Soulja Boy Tell 'Em.  It was released on October 2, 2007, by his Stacks on Deck (SOD) label, Collipark Music and Interscope Records, affiliated by the independently-incorporated HHH Artists label.  The album only features guest appearances from Arab and i15.  The album was supported by four singles: "Crank That (Soulja Boy)", "Soulja Girl" featuring i15, "Yahhh! " featuring Arab, and "Donk".

Written in the Stars (Tinie Tempah song): "Written in the Stars" is a song by English rapper Tinie Tempah, featuring American singer Eric Turner. Unlike his two prior breakthrough singles which were produced by Labrinth, the track instead features production by iSHi.  It was released in September 2010 through Parlophone, digitally on the iTunes Store.  It serves as the third official single from his debut album "Disc-Overy".  The song debuted at number one on the UK Singles Chart, becoming Tinie Tempah's second number-one single in the United Kingdom.  The song was released as Tempah's debut U.S. single, and has peaked at No. 12 on the "Billboard" Hot 100.  The track also marks Tinie's first top 10 hit on the "Billboard" Mainstream Top 40.

Soulja Boy: DeAndre Cortez Way (born July 28, 1990), known professionally as Soulja Boy Tell 'Em, or simply Soulja Boy, is an American rapper, record producer, actor and entrepreneur.  In September 2007, his debut single "Crank That (Soulja Boy)" peaked at number one on the U.S. "Billboard" Hot 100.  The single was initially self-published to the internet, and later became a number-one hit in the United States for seven non-consecutive weeks starting in September 2007.  On August 17, Way was listed at number 18 on the "Forbes" list of Hip-Hop Cash Kings of 2010 for earning $7 million for that year.

Supporting paragraphs: Happy Birthday (mixtape) Soulja Boy
Answer: December 16, 2011