My Way: Killer Karaoke
The title/subtitle combo fits best with a documentary, and really the story would best be told in the non-fiction format. I guess I wouldn't mind a minimal, realist Filipino drama, particularly one directed by Brillante Mendoza (Serbis; Kinatay). Yet for the full details, including the history of the crimes and responses from all kinds of Filipinos, from police to men who fight over karaoke to outsider perspectives, I think a doc is the best method.
And if any documentarians out there pick up on the idea, I'd definitely like to know more about the guy who killed his neighbors for doing a collective rendition of John Denver's "Take Me Home, Country Roads," as well as the woman who got violent in Seattle over a performance of Coldplay's "Yellow." A lot of songs have irritated me to no end, but this is just ridiculous -- and tragic.
The great thing about a documentary on this topic is that no matter how well (or badly) made it is, there's a very good chance it will play at SXSW and that it will receive positive reviews there. The festival is known for screening tons of music films, and the film critics who attend SXSW are known to go out singing at bars and parties at the end of the day.