Question: Mikky Ekko (born John Stephen Sudduth), is an American recording artist and record producer from Louisiana, signed to RCA Records, he's best known for being featured on Stay, a 2013 single of Rihanna's, for her seventh studio album, "Unapologetic", released in which year?

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Dimitri Tikovoï: Dimitri Tikovoï is a French record producer and DJ who has worked with bands including Placebo, The Horrors, Charli XCX, Mikky Ekko, Marianne Faithfull, and Nicola Roberts.  In 2002, Tikovoi released an album under the name "Trash Palace" ("Positions", featuring Brian Molko, John Cale, Marc Almond, Asia Argento and others).

Mikky Ekko: Mikky Ekko (born John Stephen Sudduth; December 17, 1984) is an American recording artist and record producer from Louisiana, signed to RCA Records.  He is best known for being featured on Rihanna's 2013 single "Stay", which has charted in multiple countries worldwide, becoming Ekko's first-charting material.  Ekko released his debut studio album, "Time" in January 2015 through RCA Records.

32 Levels: 32 Levels is the debut studio album by American record producer Clams Casino.  It was released on July 15, 2016, by Columbia Records.  The album contains guest appearances from Lil B, A$AP Rocky, Vince Staples, Sam Dew, Mikky Ekko, Kelela, and Samuel T. Herring, among others.

Diamonds World Tour: The Diamonds World Tour was the fifth concert tour by Barbadian recording artist Rihanna.  It was launched in support of her seventh studio album "Unapologetic" (2012).  The tour was announced in September 2012 following the singer's performance at the 2012 MTV Video Music Awards.  The tour kicked off on March 8, 2013 in Buffalo, New York and officially ending on November 15, 2013 in New Orleans, Louisiana.  The tour visited the Americas, Europe, Asia, Africa, and Australia with 96 shows in total.  This was Rihanna's first Australian tour since February 2011 with The Last Girl On Earth Tour.

Summertime '06: Summertime '06 is the debut studio double album by American rapper Vince Staples.  It was released on June 30, 2015, by ARTium Recordings, Blacksmith Records and Def Jam Recordings.  The album was primarily produced by No I.D., alongside a variety of high-profile record producers, including DJ Dahi, Clams Casino, Brian Kidd, Christian Rich and Mikky Ekko.  The album was supported by three singles: "Señorita", "Get Paid" and "Norf Norf".

Half of Me (Rihanna song): "Half of Me" is a song recorded by Barbadian recording artist Rihanna for her seventh studio album "Unapologetic" (2012).  It was written by Emeli Sandé, Naughty Boy and Stargate, with production done by the latter two.  It is a chamber pop and R&B song that sees Rihanna deliver vocals in an "experimental" fashion.  Its lyrics have been described as a "personal essay", with lyrics that discuss Rihanna's unrepentant attitude in letting people into her life.  She references Oprah Winfrey in the line "You saw me on the television".  The song garnered positive reviews from music critics, some of whom felt that it is "heartfelt" and "psychedelic".  Upon the release of "Unapologetic", the song charted in Canada, France, Ireland, Switzerland and the United Kingdom.  It debuted at number 10 on the UK R&B Chart.

Million Dollar Bill: "Million Dollar Bill" is a song performed by American recording artist Whitney Houston from her seventh studio album, "I Look to You" (2009).  It was released as the official worldwide lead (second US single) from the album on August 18, 2009 through Arista Records in the US and August 24, 2009 through RCA Records in the UK.  It is Houston's final single from a studio album, and the last song released in her lifetime before her death in 2012.  The song samples R&B singer Loleatta Holloway's "We're Getting Stronger" from Holloway's 1976 debut LP.

She Came to Give It to You: "She Came to Give It to You" is a song by American recording artist Usher, featuring American recording artist Nicki Minaj and uncredited vocals from Pharrell Williams.  It was released on July 8, 2014, through RCA Records.  RCA Records sent the song to US rhythmic contemporary and contemporary hit radio on July 14, 2014.  Originally intended to be the second single from his eighth studio album "Hard II Love", the song was scrapped from the standard edition track listing, with the track only being included on the Japanese edition of the album.

Stay (Rihanna song): "Stay" is a song recorded by Barbadian singer Rihanna for her seventh studio album, "Unapologetic" (2012).  It features guest vocals by Mikky Ekko, and was released as the second single from the album on January 7, 2013.  "Stay" was co-written by Ekko and Justin Parker.  The song's lyrical content speaks of temptation and the inability to resist true love.  Music critics were generally positive in their opinion regarding the balladry, with most describing it as a standout track on the album, though a few labeled it as boring.  The song was featured on the third-season finale of the TV Show Younger.

Time (Mikky Ekko album): Time is the debut studio album by American recording artist Mikky Ekko.  The album was released worldwide on January 16, 2015 by RCA Records, except for the United States where it was released on January 20.

Supporting paragraphs: Mikky Ekko Stay (Rihanna song)
Answer: 2012