At a flat rate of $12 per person, Harmony offers a 9-hour karaoke session that gives new meaning to the phrase "sing your heart out".
Be warned, however: the nondescript exterior conceals a no-frills karaoke bar that doubles as a nightclub come 11pm. Harmony offers beer jugs for $20 each and the option of bringing your own non-alcoholic drinks for free. The booking process is equally flexible – all you have to do is a drop a text at the number provided.