There is many artists and groups by the name of Kai 1: Kai is a progressive rock/experimental band from Japan. 2: Kai is a up and coming UK - london based - RnB singer and producer. totaling over 750,000 plays on myspace. it wont be long until he breaks out. 3: Kai is a Asian-American R&B/POP singing group from the San Francisco Bay Area started in 1992 and is currently on hiatus. 4: Kai was a DJ on the Manchester, UK underground club scene in the mid & late 1990's, specialising in Mellow Hop, Hip Hop, Break Beat and Chill Out tunes.