Wikipedia
Oi! is a subgenre of punk rock that originated in the United Kingdom in the late 1970s. The music and its associated subculture had the goal of bringing together punks, skinheads and other working class youth.
The Oi! movement was partly a response to the perception that many participants in the early punk rock scene were, in the words of The Business guitarist Steve Kent, "trendy university people using long words, trying to be artistic...and losing touch". André Schlesinger, singer of The Press, said, "Oi shares many similarities with folk music, besides its often simple musical structure; quaint in some respects and crude in others, not to mention brutally honest, it usually tells a story based in truth."
Oi! is an organisation in Hong Kong, developed by the Leisure and Cultural Services Department, that aims to promote visual arts by providing a platform for art exhibitions, forums and other art-related activities. It is situated at 12 Oil Street, Fortress Hill, North Point, at the corner with Electric Road. The address in Cantonese sounds like "Oi!".