Alexaundra Christine Schneiderman (born December 9, 1996), known professionally as AleXa (Korean: 알렉사) or Kim Se-ri (김세리), formerly Alex Christine (알렉스 크리스틴), is an American singer based in South Korea. She debuted as a K-pop singer in October 2019. In 2022, she represented her home state Oklahoma in NBC's American Song Contest with the song "Wonderland" where she won with 710 points.
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Early life
AleXa was born as Alexaundra Christine Schneiderman on December 9, 1996, in Tulsa, Oklahoma, to an American father and a South Korean mother. AleXa's mother was adopted at age five by her adoptive American parents from an orphanage in Goyang, Gyeonggi Province.
As a child, AleXa began taking dance classes (ballet, jazz, hip hop, tap, pom) around the age of two. She attended Jenks High School where she was a member of the show choir Trojanaires, which competed nationally. AleXa was an avid K-pop fan and created an Instagram dedicated to covering K-pop songs and choreography while in school.
Musical career
2016–2018: Rising Legends and Produce 48
In 2016, under the name Alex Christine, she participated in the Rising Legends online audition run by Soompi. The competition was organized in partnership with JYP Entertainment. In 2017, she competed on Rising Legends again when Soompi partnered with Cube Entertainment. Despite placing #1 in the dance category the first time and the overall winner the second, she did not make it into either of the companies' trainee programs and instead signed with ZB Label as their first (and as of 2022, only) in-house artist. In 2018, AleXa competed on Produce 48 and was eliminated in the first round at #82.
2019–2021: Debut, Do or Die and Decoherence
In 2019, under the name AleXa, she released her debut single album titled "Bomb" on October 19. She collaborated with rock band Diablo to release a rock version of the song on December 13.
In 2020, she announced her first mini-album with the release of the trailer "A.I Trooper" on February 24. The music video "Do or Die" was released on March 6. The mini-album, also titled Do or Die, was released on April 1. AleXa collaborated with girl group Dreamcatcher and boy group IN2IT to release the single "Be The Future" for the Millenasia Project on May 6. The project, supported by UNESCO's Global Education Coalition, was released to bring attention to the importance of education and safety during the COVID-19 pandemic. On July 16, AleXa released the music video for "Villain" (빌런) from her upcoming second mini-album titled Decoherence. She released the mini-album alongside the music video for "Revolution" on October 21.
In 2021, AleXa released her digital single "Never Let You Go" (오랜만이야) on January 14. She collaborated with rock band Onewe to release an acoustic version of the song on February 8. On April 12, AleXa released the OST "I Miss You Every Day" for the TV Chosun drama Somehow Family.
On May 18, Spotify announced its third RADAR collaboration in the MENA region, bringing together AleXa and Bader AlShuaibi, a Kuwaiti-Saudi pop singer. The song "Is It On" was released on May 21. AleXa released her second single album ReviveR and its lead track "Xtra" on July 1. She collaborated with all-female rock band Rolling Quartz to release the rock version of the song on August 25.
2022–2024: "Tattoo", American Song Contest, tours across the United States, Girls Gone Vogue, "Juliet"
In 2022, AleXa released her third single album Tattoo on January 6. In May 2022, AleXa competed in the American Song Contest, representing Oklahoma with the song "Wonderland", and won.
On August 3, she announced her US tour, touring eight different cities in October.
On October 20, ZB Label announced that AleXa would have a comeback on November 11. On October 22, the first concept trailer for their first mini-album, Girls Gone Vogue, was released. On October 31, ZB Label's album promotion for the upcoming album Girls Gone Vogue was postponed due to the Seoul Halloween crowd crush.
In April 2023, AleXa signed with Eshy Gazit's label Intertwine for her U.S. promotion.
On June 1, 2023, ZB Label announced that AleXa would be making a comeback with the digital single "Juliet", which was released on June 9, with an accompanied music video filmed in Jeju Island.
On June 13, 2023, AleXa was cast in the American animated series "Ghosts of Ruin" alongside Justin Long, Michael Longfellow, Rosario Dawson & Tony Revolori. The animated series is set to debut this fall via Gala Film, the film and television division of content and technology user Gala. AleXa will be the voice of Juggernaut, an irreverent and hyper pro-gamer and content creator.
On July 22, 2023, AleXa attended "San Diego Comic-Con 2023", to promote her upcoming appearance as character Juggernaut in animated series "Ghosts of Ruin".
On February 23, 2024, AleXa released the digital single "Sick". The music video for the song was released the following day. "Sick" is part of AleXa's new American studio album and is a pop-punk song.
2025–present: Departure from ZB Label and name change, Sugarcoat, upcoming re-debut
On February 20, 2025, AleXa revealed through a live that she is preparing for a re-debut in April.
On March 5, 2025, she announced that she is "stepping forward into [her] new artist journey", departing from her former label and creating new social media accounts, since the former label revoked AleXa's access to old social media accounts. In leaving her label, AleXa stated that she wanted to rebrand herself and no longer go by the monicker "AleXa", and instead go by her Korean name, 김세리. As of current day, to prevent confusion, she has stated that she is fine with being addressed as either "AleXa" or "세리(Se-ri)", as many fans were confused by the rebrand attempt.
On March 7, ZB Label released her first full-length album titled Sugarcoat, which was her last release with her label. The album features her previous pop-punk singles, such as "Sick", "I'm Okay", and "Distraction".
In July, 2025, AleXa joined Park Junhee's cover of "Free" from KPop Demon Hunters.
On December 2, 2025, Swedish public broadcaster SVT officially revealed that AleXa would participate in its national song contest Melodifestivalen 2026, with her song "Tongue Tied". On February 28, 2026 she performed in the fifth heat in Sundsvall, where she qualified to the final qualification round. She did not make it to the final.
She is also one of the songwriters for Park Junhee's song "Deep Dive" which will represent South Korea in the Eurovision Song Contest Asia 2026.
Other ventures
From June 23 to August 4, 2020, AleXa was a guest host on the podcast How Did I Get Here? often shortened to "HDIGH". On August 7, 2020, Dive Studios announced on their Twitter that she would become a permanent fixture on the show alongside original host Jae Park from Korean band Day6. The podcast won the "People's Choice" and "Entertainment" category at the Podcast Award in 2020.
Discography
Concerts
Headlining
Tours
U.S. Tour (2022)
Girls Gone Vogue Tour (2023)
Sick of You U.S. tour (2024)
Special concerts
Mini-concert: Welcome To Wonderland (2022)
Online concerts
Ctrl+AleXa (2020)
AleXa- Global Fan Party (2021)
Special Stages
KAMP Singapore (2019)
FutureCon (online) (2020)
Kpop Superfest (2021)
SNL Korea (2022)
LA Clippers vs Philadelphia 76ers 1/17 half time show (2023)
Arthur Ash Kids Day (2023)
Jingle Ball Tour (2023)
Kelly Clarkson show (2024)
KCON (music festival) (2024)
