Question: CeeLo Green and Han Seung-yeon are both what?

Context articles: Super Bowl XLVI halftime show
Only You (Cee Lo Green song)
The Voice (U.S. season 4)
Lauriana Mae
Age of Youth
CeeLo Green's The Good Life
Age of Youth 2
CeeLo Green
Fuck You (CeeLo Green song)
Han Seung-yeon

The Super Bowl XLVI halftime show took place on February 5, 2012 at the Lucas Oil Stadium in Indianapolis, Indiana as part of Super Bowl XLVI.
 It featured Madonna and guests LMFAO, Nicki Minaj, M.I.A. and CeeLo Green.
 In 2011, the National Football League (NFL) announced that Madonna would perform at the Super Bowl XLVI show.
 The singer collaborated with Cirque du Soleil on the show, where her longtime choreographer Jamie King was music director; King, in turn, enlisted the multimedia-show producer Moment Factory.
 Madonna performed four songs, beginning with "Vogue" in a Roman-Egyptian setting and followed by "Music" with LMFAO.
 Minaj and M.I.A. joined Madonna for her new single, "Give Me All Your Luvin'", and Madonna finished with Green on "Like a Prayer".
"Only You" is a song by American recording artist CeeLo Green, released by Atlantic Records in January 2013.
 The song, which features guest vocals from American singer Lauriana Mae, was co-written by Green alongside fellow American singer-songwriter, Skylar Grey.
 On April 17, 2013, Green and Mae performed "Only You" on "The Ellen DeGeneres Show".
The fourth season of the American reality talent show "The Voice" premiered on March 25, 2013 on NBC and was hosted by Carson Daly, while Christina Milian returned as the social media correspondent.
 Coaches Adam Levine, CeeLo Green, Christina Aguilera, and Blake Shelton returned, though Green and Aguilera appeared as performers instead of coaches.
 Shakira and Usher then served as replacements coaches for Aguilera and Green.
 The team sizes were trimmed back down to 12 per team (season two's team size), with each coach having two 'steals' in the Battle Rounds.
Lauriana Mae (born January 18, 1983) is an American pop, R&B and soul singer-songwriter.
 She has collaborated with musicians such as CeeLo Green, Kwamé and B.o.B.
 In 2013, she performed guest vocals on "Only You" with Green.
 She will release her debut EP, "Love Mae", in November 2016.
Age of Youth () is a South Korean television series starring Han Ye-ri, Han Seung-yeon, Park Eun-bin, Ryu Hwa-young and Park Hye-soo.
 It replaced "Mirror of the Witch" and aired on cable network JTBC on Fridays and Saturdays at 20:30 (KST) for 12 episodes from July 22 to August 27, 2016.
CeeLo Green's The Good Life is an American comedy series created and hosted by CeeLo Green.
 It premiered on TBS on June 23, 2014.
 It was cancelled by TBS on September 2, 2014.
Age of Youth 2 () is a South Korean television series starring Han Ye-ri, Han Seung-yeon, Park Eun-bin, Ji Woo and Choi Ah-ra.
 It is the sequel to the 2016 drama "Age of Youth".
 The series premiered on August 25, 2017 and airs on cable network JTBC on Fridays and Saturdays at 23:00 (KST).
Thomas DeCarlo Callaway (born May 30, 1975), better known by his stage name CeeLo Green (sometimes rendered as Cee Lo Green), is an American singer, songwriter, rapper, record producer and actor.
"Fuck You" (stylized as "Fuck You!"
 or "F**k You!")
, also titled "Forget You" or "FU" for the clean versions, is a song by American recording artist CeeLo Green.
 It was written as a collaboration between Green, Bruno Mars, The Smeezingtons, and and produced by The Smeezingtons.
 It was released on August 19, 2010 as the first single from Green's third studio album, "The Lady Killer" (2010).
 "Fuck You" received positive reviews from music critics, and was an international commercial success, making the top-10 in thirteen countries, including topping charts in the United Kingdom, and number two on the "Billboard" Hot 100.
Han Seung-yeon (born July 24, 1988), better known mononymously as Seungyeon, is a South Korean singer and actress.
 She is best known as former main vocalist of the South Korean girl group Kara.