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Kang Ji-hyun (; born February 12, 1992), known professionally as Soyou (), is a South Korean singer. She is best known as a former member of the South Korean girl group Sistar.
Soyou pursued her middle school at Mullae Middle School and completed high school at the Korean Arts High School with a specialization in theater and film. In 2012, she earned her Bachelor of Arts in Contemporary Applied Music degree from Sungshin Women's University.
In November 2012, Soyou sang a duet with hip-hop duo Geeks. The song "Officially Missing You, Too" is a remake of Tamia's song of the same title. It is a part of Geeks' project album, Re;Code Episode 1. She also collaborated with fellow label mates, K.Will and Boyfriend's Jeongmin, for Starship Planet's yearly holiday release, titled "White Love".
In September 2013, it was revealed that Soyou and Mad Clown would release a duet called "Stupid in Love" on the 10th.
In February 2014, Soyou and Junggigo released a duet called "Some".
In January 2015, it was revealed that Soyou, together with Lee Hanee and Kim Jungmin, would be the new MCs of beauty tip program Get It Beauty. The new MCs' first episode aired on February 4, 2015.
In February 2017, Soyou and Byun Baek-hyun released a duet called "Rain".
In May 2017, Sistar released their last single "Lonely". The group performed their most successful summer hits – "Touch My Body", "Shake It", "Loving U", "I Swear" and also their last song "Lonely" on four major music shows, before concluding the schedule on Inkigayo on June 4, 2017 and officially disbanding.
In August 2017, Soyou was featured as the vocalist on Primary's song "Right?".
A year and nine months after her last release, Soyou released "Gotta Go" on June 28, 2020. The song is a reggaeton, dance hall style song and was accompanied by a music video, released through Starship Entertainment's YouTube channel.
After eight months, Starship Entertainment announced that Soyou is gearing up for her next comeback on March 11, 2021. Soyou's new single "Good Night My Love" was reportedly written by Lee Hyori and composed by Babylon.
On September 8, Soyou decided not to renew her contract with Starship Entertainment. Later on September 29, Soyou signed with BPM Entertainment.
On March 1, 2022, BPM Entertainment announced Soyou would hold her first solo concert 'THE LIVE: NIGHT' on April 2 and 3. On April 27, Soyou released her third EP Day & Night, with the lead single "Business", featuring Be'O.
In September 2018, Soyou became the public relations ambassador for the Seoul branch of the Korean Red Cross, appointed by its Chairman. She has been supporting the Seoul branch since 2015, aiding underprivileged groups like undernourished children, child-headed households, elderly individuals living alone, and multicultural families.
In July 2017, she was chosen as a model for GRN's health supplement products. She specifically endorsed well-known celebrity diet products such as Green Tea Catechins and Mister Red Power Up. In the following years, Soyou continued promoting the brand, later adding their anti-aging supplement products to her list of endorsements, before parting ways at the end of 2021. Later in 2017, Soyou, a singer born in Jeju Province, was selected by Emart as their endorser for their new liquor product called "Blue Night," which originated from Jeju. As part of the promotion, she released the single "Blue Nights of Jeju Island" alongside commercials and remained an active endorser until 2019.
In September 2018, she participated as an endorser in Lotte Rental's summer vacation season exhibition for their lifestyle platform "MYOMEE." The platform allows users to rent a variety of products and goods necessary for traveling through their app for a reasonable period of time.
In May 2020, the food corporation "Cookat" launched their new PB (Private Brand) products, 'Mukbang Tteokbokki Chicken Feet' and 'Grilled Chicken Tail Bones.' The launch is in collaboration with Soyou, who is one of the entertainment industry's leading 'chicken feet enthusiasts'. Soyou participated in the entire product development process such as recipe development, package design, and product capacity setting. In March 2021, Soyou, alongside Iz*One, was selected as Pepsi Zero Sugar's 2021 K-POP partners, releasing the single 'ZERO: ATTITUDE' as part of the 'Pepsi 2021 K-POP Campaign.'
Later in August 2021, Soyou, along with comedian Yoo Se-yoon, was selected as an endorser for the 'healthy active vacation' campaign by Frip, a tourism venture founded by the Korea Tourism Organization. In September 2023, Saint Satin selected Soyou as the brand's exclusive model for their Fret Acupressure Slippers, which can be worn all year round, and Fret's Indoor shoes that prevent noise between floors.
In March 2024, Soyou filmed commercials promoting the beverage 'Refreshingly Empty Barrel Light' (hereinafter referred to as Barrel Light) by Donghwa Pharmaceutical, a functional beverage product for constipation. In May, Soyou was selected by BlingU Co., Ltd. as the endorser of their "calf and shoulder massager" product, which was first introduced by the home appliance brand "Iyuz" and has been the top pick in the Korean Consumer Preferred Brands of small massagers. In October 2024, Soyou endorsed the "30-Second Quick Bubble Mask" product by the skincare brand "Menokin," a brand that has grown more than three times since its launch in 2023.
In January 2018, Soyou held a flea market at Cure Coffee Bar with the theme "All About Soyou," where clothes, shoes, and items from her personal collection and sponsors were sold. All proceeds were then donated to the Green Umbrella Children's Foundation. In April 2019, she donated million won through the Hope Bridge National Disaster Relief Association, requesting that it be used to aid residents affected by large-scale forest fires in Gangwon-do. In February 2020, Soyou donated million won through Good Neighbors, an international relief and development NGO, to help prevent COVID-19 among Daegu residents.
In September 2022, Big Planet Made announced that Soyou donated million won to the Hope Bridge National Disaster Relief Association by adding donations to the entire sales proceeds from the flea market she held under her name in Gangnam District, Seoul. Later in November, she donated a total of million in scholarships to twenty underprivileged university students in Seoul through the Korean Red Cross Society for which Soyou acts as a public relations ambassador.
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| + List of features, showing year released, with selected chart positions, and name of the album | |||||
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| + List of collaboration singles, showing year released, with selected chart positions, and name of the album | ||||||
| "—" denotes releases that did not chart or were not released in that region. * Billboard Korea K-Pop Hot 100 was discontinued in July 2014. | ||||||
| + List of soundtrack appearances, showing year released, with selected chart positions, and name of the album | |||||||
| "—" denotes releases that did not chart or were not released in that region. * Billboard Korea K-Pop Hot 100 was discontinued in July 2014. | |||||||
| + List of promotional singles, showing year released, with selected chart positions, and name of the album ! scope="col" rowspan="2" style="width:12em" | Title ! scope="col" rowspan="2" style="width:2em" | Year ! scope="col" colspan="1" | Peak positions ! scope="col" rowspan="2" | Sales ! scope="col" rowspan="2" style="width:22em" | Album |
| + List of compilation appearances, showing year released, with selected chart positions, and name of the album ! scope="col" rowspan="2" style="width:12em" | Title ! scope="col" rowspan="2" style="width:2em" | Year ! scope="col" colspan="1" | Peak positions ! scope="col" rowspan="2" style="width:22em" | Album |
| + List of other charted songs, showing year released, with selected chart positions, and name of the album ! scope="col" rowspan="2" style="width:12em" | Title ! scope="col" rowspan="2" style="width:2em" | Year ! scope="col" colspan="1" | Peak positions ! scope="col" rowspan="2" | Sales ! scope="col" rowspan="2" style="width:22em" | Album |
| Battle Trip | Trip planner | With Kim Da-som; episodes 42–45 | |
| Matching Survival 1+1 | Host | With Lee Soo-geun, Kim Hee-chul, P.O | |
| The Call S2 | Regular member | Episodes 1–10 | |
| Youth Star | Youth mentor | ||
| Scance, not Hocance | Host | ||
| Hole-in-One | with Kim Sung-joo | ||
| God Saeng Tour | |||
| Nostalgic Again |
| April 3, 2022 |
| June 5, 2022 |
| Wonho Concert〈'WE ARE YOUNG'〉 |
| Lee Mu-jin National Tour Concert〈Supplementary Book〉 |
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