FAIRFIELD — It’s a safe bet that Louis Armstrong probably never envisioned iTunes.

It’s a bit jarring at first, actually; a Mac laptop plugged into Morningstar Studio’s sound system, pouring out the unmistakable rasp of Armstrong’s voice.

Andrea Smith couldn’t be happier to hear it.

Smith started dancing to swing music about 12 years ago. That was early for the Midwest, which caught up to the national swing revival a couple years after the coasts. She and her husband, Jeffrey, initially had to go to other areas to find groups to dance with.

Travel became less important as the trend filtered into Iowa and people started picking up dance moves that had been almost completely dormant since the mid-1950s. Acts like Big Bad Voodoo Daddy and The Brian Setzer Orchestra scored radio hits based on music played in the years immediately after World War II.

It’s hard for an untrained eye to follow specific patterns. There are some basic steps that show up for virtually every couple, but there’s a lot of improvisation going on.

“The dancing is so beautiful that I’ve loved every step of the way,” Smith said, “and I’m still learning.”

Smith sees swing dance as part of a continuum that goes back to the early 20th century. Swing grew out of the Charleston and the Lindy as jazz became popular.

“The whole thing evolved together,” she said.

Kevin Incorvia is a relative newcomer compared to Smith. He has only been dancing a few years, but he has become quite accomplished in that time. He fits the demographic for swing dancing a bit more closely than Smith. While ages range from college students to baby boomers, the groups tend to skew young.