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Autograph session with By2 at the Tainan South Park 2009.
Background information
Origin Singapore
Genres Dance-pop, Mandopop
Years active 2008–present
Labels Ocean Butterflies Music
Website Official Blog
Members Miko Bai ()
Yumi Bai ()

By2 is a Singaporean duo based in Taiwan. The duo is composed of twins Miko (Bai Wei-Fen, 白緯芬 (the older one)) and Yumi (Bai Wei-Ling, 白緯玲 (the younger one)). They were born on March 23, 1992.

The duo has a 10-year contract with Ocean Butterflies International.


Since young age, both sisters have been exposed to performing arts and have learned the violin, piano, ballet and many other styles of dancing. As they reached adolescence, their passion for performing grew and they picked up more performing skills. They joined the Chinese Folk Dance in their secondary school, Yio Chu Kang Secondary School, as part of their co-curricular activity.

At the age of 13, both of them joined the Ocean Butterflies' Music Forest's V Singer ("非常歌手") training course. The course aims to teach aspiring singers how to perform on stage and techniques in singing and dancing. They graduated from the course clinching a "Best Costume Design" award. Billy Koh of Ocean Butterflies Music noticed their talent and gave them a 10-year record deal.[1] They were sent to other countries such as Japan, China and Taiwan to gain exposure to different forms of dance styles, as well as to enhance vocal training and stage presence.

The twins also went into writing, publishing their first book “Love Always" in 2011 with an Asia-wide release.[2][3] The first edition was sold out in Taiwan within a week after the release date.

Their duo band was named "BY2" after their surname "Bai" and that they are twin sisters. Their father died of cancer when Miko and Yumi were 15 years old. Their father had hoped that Miko and Yumi will not give up on their dreams under any circumstances, thus encouraging them to actively pursue their aspiration of becoming singers.

These sisters have been given different hairstyles for easy identification due to their uncanny resemblance. However, they claimed to be different in terms of personality. Miko, Bai Wei-Fen has been described as more introverted and quiet while her sister, Yumi, Bai Wei-Ling, has been described as a more extroverted and outgoing person.

Their music company has intentions to further their skills such as improving their musical instruments, vocal training and dance practices.

The duo moved to Taiwan in 2007 to further their career.[4]



# Album Information
1 NC 16 (16未成年)
2 Twins
  • Released: April 10, 2009
  • Language: Mandarin
  • Label: Ocean Butterflies Music
  • Genre: Mandopop
3 Grown Up (成人禮)
4 90' Now (90’鬧Now)
5 Paradise (M.Y遊樂園)

Extended Plays[edit]

# Album Information
1 2020 Love You Love You (2020爱你爱你)
  • Released: August 3, 2012
  • Language: Mandarin
  • Label: Ocean Butterflies Music
  • Genre: Mandopop


External links[edit]