Solar

Kim Yong-sun, known professionally as Solar, is a South Korean singer, songwriter, and actress. As the leader and main vocalist of the girl group MAMAMOO, she has earned a reputation for her powerful, soulful voice and commanding stage presence. Her solo career took off with the 2020 single "Spit It Out," followed by the EP 容: Face in 2022, and she has since branched into musical theater and film.

Solar's influence extends beyond music. She has become a beloved figure in K-pop for her candid personality, vocal prowess, and willingness to experiment with different genres. Her YouTube channel, where she shares covers and vlogs, has amassed over 3 million subscribers, and her solo work has been praised for its artistic depth. In 2025, she made her debut in Taiwan with the Chinese single "Floating Free," further expanding her international reach. [edit]

Solar was born in Seoul on February 21, 1991. She grew up in a musical household; her father was a singer, which influenced her early interest in music. During her school years, she participated in various singing competitions and performances, honing her skills. She attended Hanyang University, where she studied musical theater, a background that would later inform her stage presence and acting career.

Before joining MAMAMOO, Solar worked as a vocal trainer and performed in small venues. She was discovered by RBW Entertainment (then WA Entertainment) through a recommendation and became a trainee alongside other future members. Her rigorous training period lasted about four years, during which she developed the vocal technique and stage confidence that would define her career. She made her official debut as the leader and main vocalist of MAMAMOO on June 19, 2014, with the single "Mr. Ambiguous." [edit]

MAMAMOO's debut marked the start of Solar's rise to prominence. The group quickly gained attention for their powerful vocals and unique concept, with hits like "Um Oh Ah Yeh" (2015) and "Starry Night" (2019) solidifying their place in K-pop. As the leader, Solar took on a central role in the group's success, often serving as a mentor to her members.

In 2020, Solar made her solo debut with the single "Spit It Out," a bold, jazz-infused track that showcased her versatility. She followed this with the EP 容: Face in 2022, which featured the lead single "Honey," a funky, retro-inspired song that highlighted her playful side. Her solo work has been praised for its artistic direction and vocal maturity.

Beyond music, Solar has expanded into acting. In 2022, she starred in the musical Mata Hari, playing the lead role, and she is set to make her film debut in the horror film The Cursed. In 2025, she released the Chinese single "Floating Free," marking her entry into the Mandarin-speaking market. She has also been a regular on variety shows, including her own YouTube series, where she shares her daily life and musical covers. [edit]

Solar is known for her powerful vocals and charismatic stage presence, but her public image is also defined by her approachable, down-to-earth personality. She often shares behind-the-scenes moments on her YouTube channel, where she has over 3 million subscribers, giving fans a glimpse into her daily life. Her fashion style ranges from elegant to edgy, and she is often praised for her ability to pull off bold looks. Fans appreciate her candidness and her willingness to talk about the challenges of being an idol, which has made her a relatable figure in the industry. [edit]

Solar commands a fanbase that operates with the precision of an orchestra and the heart of a family. While officially part of the global Moomoo community, her individual following distinguishes itself through an obsessive devotion to vocal mastery and a willingness to champion her genre-bending solo experiments. This isn't just passive consumption; it is active curation. Fans mobilized instantly when news of potential military enlistment surfaced in late 2025, creating a digital frenzy that underscored the emotional stakes involved in her career trajectory. The connection feels personal yet professional, exemplified by moments like the August 2026 Manila tour stop where she playfully recreated local celebrity posters, bridging cultural gaps with effortless charm. Her audience celebrates not only her status as MAMAMOO's leader but also her evolution into a musical theater actress and film star. They track every chart position, from her Billboard debut with "Spit It Out" to the viral success of "Colors," treating each release as a collective victory. Despite the intensity of their support, the atmosphere remains grounded in Solar's own approachable nature, turning concert halls into spaces of shared joy rather than distant worship. As of August 2026, iFANN has evaluated this profile within its Global Fame Engine, confirming that Solar does not currently hold a placement in the published rankings (Global Top 1,000 or a Top-100 scope list). She remains unranked in the current edition of the Global Top 1,000. She holds no placement in any Top-100 scope list.[edit]

Kim Yong-sun adopted her stage name because her smile shines as brightly as the sun. A favorite foodie who frequently shares her meals on social media, she balances her culinary indulgences with rigorous vocal training, often offering singing tips to aspiring fans. An avid reader, she regularly recommends books to her followers, blending entertainment with intellectual curiosity. Beyond these daily habits, a widely retold story claims she was preparing to become a flight attendant before her singing talent emerged, a narrative fans still retell to highlight her natural diva status. Her legend as a live powerhouse is cemented by consistent performances that define MAMAMOO's reputation for harmony. In August 2026, she launched "Solarsido," a new initiative framed as a demonstration of her enduring challenge spirit. That same month, a viral moment occurred during her Manila tour when she and Moonbyul humorously recreated a poster featuring Filipino celebrities Dustin Yu and Bianca de Vera, delighting international crowds. Recent years have also seen intense fan reactions to rumors regarding her military service and dating clarifications, proving her deep connection to the public consciousness.[edit]

Solar was born to a family that supported her musical aspirations. Her father was a singer, which inspired her to pursue a career in music. She has an older sister, though details about her are kept private. As of 2026, Solar is not married and has no children. She lives with her pet dog Simkong, who frequently appears in her social media posts. Solar has spoken about her close bond with her mother, who she credits for her strong work ethic. [edit]

Solar is closely associated with her fellow MAMAMOO members, with whom she has shared a decade-long journey. She has also collaborated with artists like Wheein, with whom she forms the sub-unit MAMAMOO+. Her solo work has brought her into contact with various producers and musicians, but she remains deeply rooted in the MAMAMOO family. [edit]

Solar has kept her personal life relatively private. She has not publicly confirmed any long-term relationships. There have been rumors of dating in the past, but none have been substantiated. As of 2026, Solar is reportedly single, focusing on her career and personal projects. [edit]

iFANN currently estimates Solar's net worth at $10 million in 2026. Her financial portfolio is anchored by a robust music career, generating revenue through album sales, digital streams, and extensive concert tours with MAMAMOO as well as her solo endeavors. Additional income flows from her YouTube channel, which attracts significant ad revenue from over 3 million subscribers, alongside lucrative brand endorsements. Her acting roles and frequent appearances on variety shows have further diversified her earnings stream. Solar has also made strategic investments in real estate, notably purchasing a building in Seoul, which serves as a substantial asset within her growing financial empire.[edit]

Solar has won several awards as part of MAMAMOO, but her individual accolades include recognition for her solo music and variety appearances. She received the Best Solo Performance award at the 2020 Mnet Asian Music Awards for "Spit It Out." She also won the Popularity Award at the 2022 Asia Artist Awards. Her YouTube channel has been recognized with a Gold Play Button for surpassing one million subscribers. [edit]