A-One is a mandopop group created in 2008 under the label Hong Kong Kiss-star entertainment Beijing company (é¦Â港Kiss Star娱ä¹ÂÃ¥ÂÂ京æÂÂéÂÂå ¬å¸).
A number of names have been used for this group.
Originally Gillian Chung was scheduled to be a performer at the 2008 Summer Olympics opening ceremony. But due to the Edison Chen photo scandal, director Zhang Yimou had replaced Twins with A-One. A-One did not make their international debut on 8 August as part of the ceremony.
After 2 years of training the group debuted after Hunan Satellite TV show Happy camp (å¿«ä¹Â大æÂÂ¥).
The group members are counted as 3+x where the most popular 3 members are in the group. Sometimes it may have 5 or more members. There had been 10 members in total. The official website describe this fan selection style as democratic (æ°Â主) for the 21st century.