A fascinating mix of microelectronics, sensors, and marketing!
But singing candles are for real; there's even a "play list"!
They even have a patent on the technology: US
Patent number 05015175, MELODIC CANDLE ASSEMBLY
And there's still an interesting
story behind this.....
Even "serious people" study candles... see this
link to NASA for a zero-g
candle flame study. I think this is officially "Candle Flames In
Microgravity * USML-1 Glovebox Experiment #8". Neat pictures and interesting
physics can be found there!
Take a look at Shuttle
And combustion in space continues on STS-75!
And there are other interesting stories related to combustion, such as flaming toaster-based