Video: Who would have though a column of fire slowly moving in your direction could be in any way calming? The sound this massive match bomb makes is kind of a wind-through-the-trees thing, mixed with one of those Calming Ocean Sounds™ relaxation tapes, and the white noise machine in your therapist's office. Mmmm, just like a campfire, but for some incredibly dangerous reason, it's indoors.
As a bonus, HTD keeps filming as the matches burn and wilt into a pile of kelp-and-liquorice-looking husks (two flavours which probably do not mix well). How this didn't set off every smoke alarm in a 10 block radius is a total miracle.