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| Cateen Hayato Sumino Confirms Marriage in New Year Message, Thanks Fans for Years of Support (Photo: Sanspo) |
Japanese pianist Hayato Sumino, widely known by his online name Cateen, has started 2026 by sharing joyful personal news with his fans. On 1 January, the 30-year-old musician posted a handwritten letter on his social media, officially announcing his marriage and thanking supporters for standing by him throughout his journey.
In the message, Hayato Sumino revealed that he has married someone he had been in a long-term relationship with.
He described his partner as a person who works behind the scenes rather than in the public eye, but someone he deeply respects for their quiet strength, kindness, and consideration for others.
He also shared that this partner has been a constant and heartfelt supporter of his musical career, both professionally and personally.
— 角野隼斗 - かてぃん (@880hz) January 1, 2026
Hayato Sumino wrote that this new chapter in his life has motivated him to continue growing, not just as a musician, but as a person. He expressed his hope to return the gratitude he feels towards fans through his music, promising to keep refining his craft and delivering performances that reflect his appreciation for their encouragement over the years.
Known for blending technical brilliance with approachability, Sumino has built an impressive career on both classical and digital platforms.
A graduate of the University of Tokyo’s engineering faculty and its graduate school, he gained international attention after reaching the semi-finals of the Chopin International Piano Competition in 2021.
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His global presence continued to expand with major performances, including a solo concert at New York’s Carnegie Hall and a record-breaking indoor solo piano concert in Yokohama, recognised by Guinness World Records for ticket sales.
Beyond the classical stage, Sumino has also connected with younger audiences through his Cateen YouTube channel, which has grown into one of the most influential piano-focused platforms in Japan.
He is also active as a keyboardist in the band Penthouse and has contributed original music to high-profile projects, including figure skating exhibition programmes.
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Closing his New Year message, Sumino humbly asked for continued support as he steps into this next phase of life and music.
Fans celebrate both his personal happiness and ongoing achievements, many are already sharing warm messages and memories of how his music has accompanied them over the years.
What was the first Cateen performance that made you a fan?