The afternoon we tagged along Martin and Ashley met the Spidergoat Family Band, a traveling group from California.
The band was happy to have their pictures taken, while filling Market Square with their music. The Kings captured some cute pictures of the youngest band member, playing a drum at age eight.
Martin says the flash mob approach often brings out the best in their subjects. "It catches people in a natural moment, in clothes they are comfortable in, in a setting they are comfortable in, instead of staging it the whole time."
The Kings have only been "flash-mobbing" people for about a month and half.
They say they've learned some valuable lessons along the way. "One time I walked up to a couple. He was out with someone he was not supposed to be out with, and he took off running," Martin said. :Things happen like that every now and then."
"We learned really quick that you should always ask people before your take their pictures, instead of the other way around," Ashley added.
So who makes the best subjects? The couple says kids are always a favorite, but they've captured people of all ages, in all kinds of settings.
"We've even gone to Cades Cove and done a lot of shoots there. People are outdoorsy and we want to take photos where they love."
They plan to make It's Your Moment Now their full time jobs. They're also opening a printing studio this fall where they'll offer wrapped canvases and life size wall prints.