Over its first decade, “A St. Patrick’s Day Celtic Sojourn” has made a point of featuring performers representing the younger generation of Irish, Scottish, and other Celtic music and dance traditions. And there’s even more of a “youth movement” to this year’s show – the 11th edition – which will take place on March 19 and 20 in Sanders Theatre at Harvard University in Cambridge, with additional performances at Worcester’s Hanover Theatre (March 17) and Zeiterion Theatre in New Bedford (March 18).

The 2016 line-up includes The Outside Track, a “pan-Celtic” band with Irish, Scottish, and Cape Breton influences; Newfoundland traditional ballad singer Matthew Byrne; Boston-based uilleann piper Joey Abarta; and 13-year-old Haley Richardson, already established as an up-and-coming fiddler.

National Heritage Fellowship winner Kevin Doyle and the Miller Family, a trio of New England siblings, will provide the show’s dance component, while Vermont guitarist-vocalist Keith Murphy will once again serve as music director.

“When you gather musicians, singers, and dancers of this stripe, it’s often a let-down to just do one performance,” says the show’s creator and host, WGBH-FM broadcaster Brian O’Donovan. “So it’s nice to be able to add an extra date at Sanders Theatre, as well as once more go on the road, to Worcester and New Bedford. One of the things I love about the experience is the friendships and collaborations that result from ‘Celtic Sojourn,’ and I’m sure there will be plenty to come from this year.”

Although they’ve been together for a decade, The Outside Track remains a potent symbol of the Celtic music scene’s fountain of youth. They’ve released four albums, including the recent “Light Up the Dark” all to great acclaim, and have been lauded for both their instrumental and vocal work. Co-founders Allie Robertson (harp) and Fiona Black (accordion) from Scotland are at the heart of the band, along with long-time Irish guitarist Cillian Ó’Dálaigh, and their new colleague, lead vocalist and flute and whistle player Teresa Horgan from Ireland. There’ll be a bit of local flavor for The Outside Track’s “St. Patrick’s Day Celtic Sojourn” appearance, as Greater Boston’s Emerald Rae stands in for their regular fiddler Mairi Rankin, a Nova Scotia native who supplies the Cape Breton side of the band’s personality.

Newfoundland-born Matthew Byrne, meanwhile, has staked his claim as one of North America’s best interpreters of traditional songs to come along in the past five years, on the strength of his two albums, including last year’s enthusiastically received “Hearts & Heroes” (winner of the Canadian Folk Music Awards “Traditional Album of the Year” honors).

Joey Abarta is widely acknowledged as among the most talented young uilleann pipers in the US or elsewhere, and has become a mainstay of the Boston Irish music scene since moving to the area seven years ago. In addition to performing, he has also helped to organize events – such as a regular series of ceili dances in Jamaica Plain – and taught at the music school of the Comhaltas Ceóltoirí Éireann Boston branch.

Haley Richardson, a protégé of renowned Sligo-style fiddler Brian Conway, has already amassed several Mid-Atlantic Fleadh and All-Ireland titles, appeared with notable Irish music personalities such as The Chieftains and Mick Moloney, and released an album, “Heart on a String,” accompanied by her older guitar-playing brother Dylan.
Kevin Doyle, a virtuoso of old-style traditional Irish step dance and American tap dance, has been a frequent performer at Boston-area events, including “A Christmas Celtic Sojourn” and BCMFest. The Miller Family – Ruby May, Evelyn, and Samuel – have been dancing and competing since childhood with the Goulding School of Irish Dance in Medford and Cranston, RI.

For ticket information and other details about “A St. Patrick’s Day Celtic Sojourn,” see wgbh.org/celtic.