Question: The song Skin which was included in Rihanna's Loud Tour is by who?

"Complicated" is a song by Barbadian recording artist Rihanna from her fifth studio album "Loud" (2010).  It was written and produced by Tricky Stewart and Ester Dean.  "Complicated" is a dance-pop, hip hop and trance music song, which also displays elements of pop, dance-pop and R&B.  It contains lyrical content explaining how two people in a relationship can find one another complicated at times.  The song was acclaimed by critics, as the majority of reviewers concluded that it was one of the best tracks to be included on "Loud".  Reviewers also praised Rihanna's vocal performance in the song.  Upon the release of the album in November 2010, the song charted at number 50 on the South Korea Gaon International Chart. <SEP>  Performing in over twenty countries in the Americas and Europe, the tour was launched in support of Rihanna's fifth studio album "Loud" (2010) but eventually supported her following album "Talk that Talk" as it was released during the tour, in November 2011.  Critics acclaimed the show for its liveliness and higher caliber of quality when compared to Rihanna's previous tours.  The Loud Tour was a large commercial success, experiencing demand for an extension of shows in the United Kingdom due to popularity.  In London, Rihanna played a record breaking 10 dates at The O2 Arena. The Loud Tour was the fourth overall and third world concert tour by Barbadian recording artist Rihanna.  The tour ultimately grossed an estimated value of US$90 million from 98 reported shows and a total audience of 1,200,800.  The Loud Tour became the 7th highest grossing tour of 2011. <SEP> "Fading" is a song by Barbadian recording artist Rihanna from her fifth studio album, "Loud" (2010).  The song was written by Jamal Jones and Ester Dean, whilst production of the song was completed by Jones under his production name, Polow da Don.  Musically, the song samples Irish instrumentalist and singer-songwriter Enya' s "One by One", whilst lyrically, the song is about leaving a man in a relationship.  After "Loud" had strong digital download sales in the United Kingdom, "Fading" charted at number 187 on that country's singles chart in November 2010.  The song received generally positive reviews from music critics, who praised da Don's production, but one critic criticized Rihanna for copying herself and failing to create something different.  Some critics also compared it to one of Rihanna's previous singles, "Take A Bow".  The song has also been performed on select dates of the Loud Tour (2011). <SEP>  The song was written by Kenneth Coby and Ursula Yancy, with production helmed by Soundz. "Skin" is a song by Barbadian recording artist Rihanna from her fifth studio album, "Loud" (2010).  Musically, "Skin" is a R&B song that contains influences from pop, dance-pop and dubstep genres, whilst lyrically, the song is about being in a relationship with someone and only wanting to feel their skin close to the protagonists.  "Skin" received generally positive reviews from critics, as part of their overall review of "Loud", praising "Skins compositions as well as Rihanna's sensual vocal performance.  The song was included on the set list of the Loud Tour (2011), where Rihanna retrieves a man or woman from the audience near the end of the song, and performs a lap-dance whilst on an elevated platform.  "Skin" was also used in Rihanna's advertisement campaign for Armani Jeans.