Twins are a Hong Kong Cantopop duo that was created in the summer of 2001 by Emperor Entertainment Group (EEG). Twins are made up of two girls, Charlene Choi and Gillian Chung. They are a popular group in Hong Kong and a top band in mainland China. Their fanbase have included Taiwan, Japan, Singapore, Thailand, Malaysia, Canada, Australia, United States, Vietnam and Philippines. Their music was generally targeted at young teens, but in 2004 they began to attract a wider audience by venturing into different styles of music. In February 2008 the duo temporarily separated after the Edison Chen photo scandal involving Gillian Chung. The group reunited two years later in 2010.

Cantopop is a genre of pop music written in standard Chinese and sung in Cantonese. Cantopop is also used to refer to the cultural context of its production and consumption. The genre began in the 1970s and became associated with Hong Kong popular music from the middle of the decade. Cantopop then reached its height of popularity in the 1980s and 1990s before slowly declining in the 2000s and shrinking in the 2010s. The term "Cantopop" itself was coined in 1978 after "Cantorock", a term first used in 1974. In the 1980s, Cantopop reached its highest glory with fanbase and concerts all over the world, especially in Macau, Mainland China, Taiwan, Singapore, Malaysia, South Korea, and Japan. This was even more obvious with the influx of songs from Hong Kong movies during the time.