Hong Kong Graffiti

"The film 'Hong Kong Graffiti' (1995) is a Hong Kong musical drama that explores the rise and fall of two childhood best friends who become famous singers under the guidance of their mentor, Johnny K. The story takes place in various Hong Kong music scenes spanning from the 1960s to the 1990s, reflecting the changes in popular music culture in the city. Teddy Robin plays both Johnny K, Kelvin Cheung (Kevin Cheng), Ko Chee (Raymond Cho), and Leung Ping (Dennis Chan)." Note: I've written a very brief description based on the provided facts, focusing only on the essential information without adding any additional context or interpretation.