Question: What South Korean sitcom starred a South Korean singer and actress who began her music career at the age of 15?

full_context: Document 1: The Producers (TV series): The Producers (; lit. Producer) is a 2015 South Korean sitcom starring Cha Tae-hyun, Gong Hyo-jin, Kim Soo-hyun, and IU. It aired on KBS2 from 15 May 2015 to 20 June 2015 on Fridays and Saturdays at 21:15 for 12 episodes.
Document 2: Seohyun: Seo Ju-hyun (born June 28, 1991), known professionally as Seohyun, is a South Korean singer and actress. She debuted as a member of girl group Girls' Generation (and later its subgroup TTS) in August 2007, who went on to be one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Apart from her group's activities, she has established herself as an actress, notably through her participation in the original and Korean versions of stage musicals including "Moon Embracing the Sun", "Gone with the Wind" and "Mamma Mia". She also starred in the drama "". She debuted as a solo artist with her debut mini album, "Don't Say No", on January 17, 2017, making her the third Girls' Generation member to debut as a solo artist.
Document 3: High Society (2015 TV series): High Society () is a 2015 South Korean television series starring Uee, Sung Joon, Park Hyung-sik and Lim Ji-yeon. It aired on SBS from June 8 to July 28, 2015 on Mondays and Tuesdays at 21:55 for 16 episodes.
Document 4: 2015 KBS Drama Awards: The 2015 KBS Drama Awards (), presented by Korean Broadcasting System (KBS), took place on December 31, 2015 in Yeouido, Seoul. It was hosted by Jun Hyun-moo, Park Bo-gum and Kim So-hyun.
Document 5: G-Dragon: Kwon Ji-yong (; born August 18, 1988), better known by his stage name G-Dragon, is a South Korean rapper, singer-songwriter, record producer, and fashion icon. After six years as a trainee under the record label YG Entertainment, G-Dragon rose to fame in the mid-2000s as one of two rappers in the South Korean hip hop boy band Big Bang. Despite initial lukewarm receptions, the group became one of the best-selling digital groups of all-time in Asia and one of the best-selling boy bands in the world.
Document 6: Five Enough: Five Enough () is a 2016 South Korea television series starring Ahn Jae-wook, So Yoo-jin, Shim Hyung-tak, Shim Yi-young, Im Soo-hyang, Shin Hye-sun, Sung Hoon and Ahn Woo-yeon. It airs on KBS2 every Saturday and Sunday from February 20, 2016 at 19:55.
Document 7: Im Yoon-ah: Im Yoon-ah (Hangul: 임윤아 ; born May 30, 1990), better known by the mononym Yoona, is a South Korean singer and actress. She debuted as a member of girl group Girls' Generation in August 2007, who went on to become one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide.
Document 8: IU (singer): Lee Ji-eun (Korean: 이지은 ; born May 16, 1993), better known by her stage name IU (Korean: 아이유 ), is a South Korean singer, songwriter and actress. While still in middle school, IU auditioned for various talent agencies with ambitions of becoming a singer. She signed with LOEN Entertainment in 2007 as a trainee and began her music career at the age of 15 with her debut album, "Lost and Found". Her follow-up albums, "Growing Up" and "IU...IM", brought her mainstream success, but it was through "Good Day" (Korean: 좋은 날 ), the lead single from her 2010 album "Real", that she achieved national stardom. "Good Day" spent five consecutive weeks at the top position of South Korea's Gaon Digital Chart and holds the record for spending the most number of weeks at No. 1 along with Psy's "Gangnam Style".
Document 9: The Lover (TV series): The Lover () is a 2015 South Korean television series starring Oh Jung-se, Ryu Hyun-kyung, Jung Joon-young, Choi Yeo-jin, Park Jong-hwan, Ha Eun-seol, Takuya Terada and Lee Jae-joon. It aired on Mnet from April 2 to June 25, 2015 on Thursdays at 23:00 for 12 episodes.
Document 10: Lee Hyori: Lee Hyo-ri (born May 10, 1979), is a South Korean singer, record producer, activist, actress and television presenter. Dubbed as the "Nation's Fairy" during her "Family Outing" days, she debuted as a member of South Korean girl group Fin.K.L, but has since become a solo artist. In 2003, she released her debut solo album "Stylish" which won several "Artist of the Year" awards. In 2006, Lee was the highest-paid female singer in South Korea when she signed a contract with Mnet Media.
Document 11: Growing Up (IU album): Growing Up is the first Korean-language studio album by South Korean singer-songwriter and actress IU. It was released on April 23, 2009, as a follow-up to her 2008 debut mini-album "Lost and Found". Two of the album's 16 tracks, "Boo" and "You Know (있잖아) (Rock Ver.)", were released as singles.
Document 12: Juniel: Choi Seo-ah (Korean: 최서아; born Choi Jun-hee on September 3, 1993) better known by her stage name Juniel (Hangul: 주니엘, often stylized as JUNIEL) is a South Korean singer-songwriter. She began her career in Japan before eventually debuting in South Korea. She was first known as 'Junie', but eventually changed her stage name to 'Juniel', which was derived from combining her name, Junie, and L for 'love'. She was also a member of the duo Romantic J with CNBLUE's Lee Jong-hyun under former label FNC Entertainment. In 2016, Juniel announced on her social media that she legally changed her native name from 최준희 (Choi Jun-hee) to 최서아 (Choi Seo-ah).
Document 13: Seungri: Lee Seung-hyun (Hangul: 이승현; born December 12, 1990), better known by his stage name Seungri (Hangul: 승리, "Victory") and V.I when performing in Japan, is a South Korean singer, songwriter, record producer, actor, and entrepreneur. In the mid-2000s, Seungri rose to prominence as one of three vocalists and youngest member of the South Korean boy band Big Bang under YG Entertainment, which eventually became one of the best-selling digital group of all-time in Asia and one of the best-selling boy bands in the world. With the release of the group's second studio album "Remember" (2008), in which the second single released, "Strong Baby", was performed solely by Seungri, he began to adopt a more mature image as an artist.
Document 14: Cha Tae-hyun: Cha Tae-hyun (born March 25, 1976) is a South Korean actor, singer, television personality radio DJ and director. He is best known for his lead roles in the box-office hit comedies "My Sassy Girl" (2001), "Scandal Makers" (2008) and "Hello Ghost" (2010) as well as the television series "Jeon Woo-chi" (2012) and "The Producers" (2015). He made his directorial debut with the variety-drama "Hit the Top" (2017), in which he also stars.
Document 15: Who Are You: School 2015: Who Are You: School 2015 (Hangul: 후아유: 학교 2015 ; RR: "Huayu: Hakgyo 2015 " ) is a South Korean television series, starring Kim So-hyun, Nam Joo-hyuk, and Yook Sung-jae. It aired on KBS2 from April 27 to June 16, 2015 every Monday and Tuesday at 21:55 KST for 16 episodes. It is the sixth installment of KBS's "School" series which premiered in 1999.
ground_truth: The Producers