Irish vocal group Anúna, led by twin brothers Michael and John McGlynn, is gearing up for a fall tour that will hit 1,800- to 3,000 capacity theaters and performing arts centers across North America.

The approximately 35-city outing supports the act's forthcoming concert CD and DVD from "Celtic Origins," a TV special filmed at Cleveland's Trinity Cathedral, which airs nationally as part of Public Television Stations' August/September pledge drive. In many markets, Anúna concerts will coincide with "Celtic Origins" broadcast airings, according to Denny Young, president of Elevation and executive producer of "Celtic Origins."

The trek begins Oct. 4 in Cincinnati and visits such markets as Cleveland, Detroit, Los Angeles, New York, Boston, Baltimore, Toronto, Philadelphia, Miami, San Francisco and Dallas, among others. A full list of dates and venues are to be announced shortly. Ticket prices will range between $30 and $60, Young says.

With some 20 years under its belt, Anúna has spent much of its career performing for audiences worldwide. Although Anúna has previously performed scattered dates throughout the United States, this will be the group's first big push Stateside. "We're big everywhere except in America," John McGlynn tells "So this is our assault on the other side of the Atlantic."

McGlynn adds that the "Celtic Origins" TV special and DVD will serve as a benchmark for what fans can expect at upcoming Anúna concerts. "What you see is what you get," he says. "We do some original material and some arrangements." Additionally, "there's a lot of talk and laughing and joking," he continues. "It's the contrast between a laid back, relaxed presentation and beautiful pieces of music."

The "Celtic Origins" TV special includes such arrangements and traditional songs as "Greensleeves," "Scarborough Fair," "Marble Halls," and "Our Wedding Day," along with a McGlynn brothers duet of John Denver's "Annie's Song." For the taping, the brothers were joined onstage by 14 additional vocalists and 11 musicians.

So how did the whole "Celtic Origins" project come together? "Basically, [Elevation president Danny Young] contacted us from America, saying, 'Would you be interested in doing a TV special?' McGlynn recalls, noting that Young's sister had caught an Anúna performance in Ireland. "She came home and said, 'Wow, we saw this unbelievable group in Dublin called Anúna. And Danny said, 'What? I have all their CDs.' It all changed from there."

The "Celtic Origins" 19-song CD will be released July 21, and the 24-song DVD will drop Oct. 15, both via Elevation. The CD and DVD will be available exclusively at Borders, which will be "executing a major in-store marking campaign," according to Young. Prior to their scheduled retail releases, the CD and DVD will be available during the on-air pledge drive.

In addition, XM satellite radio will broadcast the "Celtic Origins" concert this fall on two of its stations: The Village (XM 15) and Fine Tuning (XM 76). XM will also provide promotional support for the TV special and tour across several of its channels.