Question: Which two artists are also featured in the Jay-Z song in which Jeff Bhasker won a Grammy Award for producing?
Context: "Carry On" is a song by American indie pop band fun.  It was released on 23 October 2012 as the third single off their second album, "Some Nights".  The song was written by the band members, Nate Ruess, Andrew Dost, Jack Antonoff, alongside the album's producer, Jeff Bhasker.  It is also featured in the HGTV 2013 #LoveHome commercial and in the pilot episode of FX series "Legit".  The song is also featured in the 2013 documentary "Bridegroom".  Alvin and the Chipmunks covered the song for the 2015 live stage tour "". "A Star Is Born" is a song by American hip hop recording artist Jay-Z from his eleventh studio album "The Blueprint 3" (2009).  The song, produced by Kanye West, Kenoe and No I.D., features a verse from American rapper J. Cole, Jay-Z's protege and the first artist to be signed to his Roc Nation label.  In the song, Jay-Z recognizes rappers who have risen to fame in the last decade, such as Kanye West, Lil Wayne, T.I., Eminem and 50 Cent .  Notably, Jay-Z also gives shout-outs to Mobb Deep, Nas and two artists whom he had previously insulted on his 2001 song "Takeover". "I'm on a Boat" is a single from The Lonely Island's debut album "Incredibad".  It was also featured as a "Saturday Night Live" Digital Short.  The song features R&B singer T-Pain.  The song, produced by Wyshmaster, is a parody of many rap video clichés, especially the music video for the Jay-Z song "Big Pimpin'."  The music video reached number one on YouTube in February 2009 and was number one on the US iTunes music video chart.  The song was nominated for Best Rap/Sung Collaboration at the 52nd Grammy Awards.  The Lonely Island has also performed the song live on "Late Night with Jimmy Fallon" with Black Thought filling in for T-Pain.  The song went platinum. "Moonshine" is a song recorded by American singer-songwriter Bruno Mars for his second studio album "Unorthodox Jukebox" (2012).  It was written by Bruno Mars, Philip Lawrence, Ari Levine, Andrew Wyatt, Jeff Bhasker and Mark Ronson who also served as its producer along with the former three, under their alias, The Smeezingtons, and Bhasker.  "Moonshine" is a midtempo pop, power pop and R&B record.  In addition to be heavily influenced by quiet storm and dance-pop styles, as well as, presenting a "disco groove".  Development of "Moonshine" began while Mars, Ronson and Bhasker "went out one night" and drunk moonshine all night long.  When they returned to the studio they started jamming, while Mars screamed "Moonshine, take us to the stars!" . Watch the Throne is a collaborative studio album by American rappers Jay-Z and Kanye West, released on August 8, 2011, by Roc-A-Fella Records, Roc Nation, and Def Jam Recordings.  Before the album, Jay-Z and West had collaborated on their respective singles and with West as a producer on Jay-Z's work.  As longtime friends, they originally sought out to record a five-song EP together, but the project eventually evolved into a full-length album.  Recording sessions took place at various locations and began in November 2010.  Production on the album was led by West himself, alongside a variety of high-profile record producers including Mike Dean, Swizz Beatz, Sak Pase, Jeff Bhasker, The Neptunes and Q-Tip. American singer-songwriter Bruno Mars has written and recorded songs for his studio albums, "Doo-Wops & Hooligans" (2010) and "Unorthodox Jukebox" (2012), and has written songs for other singers.  The Smeezingtons (Bruno Mars, Philip Lawrence, Ari Levine) worked in the majority of the songs in Mars' debut studio album, including writing "Count on Me" and "Marry You" together.  The team collaborated with Khari Cain and Khalil Walton on the album's lead single "Just the Way You Are", peaking at number one on the "Billboard" Hot 100.  Mars explained "I wasn't thinking of anything deep or poetic.  I was telling a story."  Mars co-wrote and co-produced the song "Talking to the Moon" with Grammy Award winning producer Jeff Bhasker.  The single "Grenade", was conceptualised after Mars heard an unreleased track with similar lyrical themes.  Mars' follow-up album, in addition to reunite collaborators from his previous album, such as The Smeezingtons and Jeff Bhasker, included new composers, such as Mark Ronson and Emile Haynie.  All of these producers worked on the lead single "Locked Out of Heaven".  The song concerns a relationship infused with positive emotion and good sex.  The idea behind the second single, "When I Was Your Man", is the regret of letting a girl get away.  Several of the songs were written solely by his production team, including the lead single, "If I Knew" and the single "Gorilla" "Run This Town" is a song by American rapper Jay-Z.  The song also features Kanye West and Rihanna.  It was written by the performing trio, with assistance from Ernest Wilson and Jeff Bhasker.  Production of the track was made by West and Wilson (also known as "No I.D.").  "Run This Town" was released as the second single from Jay-Z's eleventh studio album "The Blueprint 3", and is used as the theme song of "Battlefield 4". "Lift Off" is a song by Jay-Z and Kanye West featuring American recording artist Beyoncé.  It was written by Kanye West, Jay-Z, Jeff Bhasker, Mike Dean, Bruno Mars and Seal, while production was handled by West, Bhasker, Mike Dean, Pharrell, Q-Tip, and Don Jazzy for Jay-Z' s and West' s collaboration album, "Watch the Throne" (2011).  The song was rumored to be released as the lead single from the album containing additional vocals by Bruno Mars.  However, Mars never appeared on the song and it was sent to urban contemporary radio on August 23, 2011. Jeff Bhasker (also known as Billy Kraven and U.G.L.Y.) is an American record producer, songwriter, keyboardist, vocalist, and multi-instrumentalist.  He collaborated with rapper and producer Kanye West on the albums "808s & Heartbreak", "My Beautiful Dark Twisted Fantasy", and "Watch the Throne".  He has won Grammy Awards for the songs "Run This Town" by Jay-Z, "All of the Lights" by Kanye West, "We Are Young" by Fun. , and "Uptown Funk" by Mark Ronson.  Bhasker received the 2016 Grammy Award for Producer of the Year, Non-Classical for co-producing Mark Ronson's album "Uptown Special" and producing Nate Ruess's album "Grand Romantic" among other records. "Party" is a song recorded by American singer Beyoncé for her fourth studio album, "4" (2011).  It features guest vocals from American rapper André 3000 and uncredited vocals from Kanye West, and was released by Columbia Records as the fourth single from "4" on August 30, 2011.  The song was written by Kanye West, Jeff Bhasker and Beyoncé, with the production being handled by Beyoncé and West and was co-produced by Bhasker.  A midtempo R&B song, "Party" exhibits elements of the 1980s funk and soul music, and samples the 1985 song "La Di Da Di", written by Dexter Mills, Douglas Davis and Ricky Walters.  It recalls the work of New Edition and Prince, among others.  Built on a 808-retro beat, multi-tracked harmonies, and a smooth groove, the song's instrumentation includes slow-bouncing synthesizers, keyboard tones, and drums. Lyrically, "Party" is about being "in the mood for some loving."  In his rap verses, André 3000 references milk and gets philosophical about his own career.  "Party" was nominated for Best Rap/Sung Collaboration at the 54th Grammy Awards.
Answer: Kanye West and Rihanna