Solas An Lae Dance Company will be dancing at the second annual Blackstone River Theatre Celtic Festival, to be held Saturday from 11 a.m. to 7 p.m. at Cumberland’s Diamond Hill Park.

The first Blackstone River Theatre Celtic Festival drew about 2,000 people to Diamond Hill State Park, in Cumberland, and organizer Russell Gusetti is hoping for more people — and he’s putting up more music to attract them.

This year’s festival will have a third music stage to go along with the dance and children’s stages. Called the Heritage Stage, it will feature most of the groups from the festival playing in smaller layouts, a layout Gusetti compared to the old workshop stage at the Cajun and Bluegrass festivals that were the predecessors to the Rhythm and Roots Fest.

This will allow the groups to have “a little more nuance in explaining the kinds of things they do” than they will from either of the big stages — particularly the main stage, which has the pond between the stage and the audience — and let them focus on one aspect of the music they cover, rather than a broad-based big-stage performance.

So The Atwater-Donnelly Trio, for example, will be joined by Trua, a group of young performers from southern New England who have taken lessons from some of the state’s finest Celtic musicians. Trouz Bras, whom Gusetti calls the only band touring North America playing the music of Brittany, will have an instructor explaining the dance traditions behind the music.

This year’s lineup is more traditional than last year’s, Gusetti says — “no drum kits, no bass guitars, no electric guitars” — and while diehards such as Aoife Clancy and Robbie O’Connell, Atwater-Donnelly and Gusetti’s group Pendragon are on the bill, he says that there’s a healthy influx of young traditionalists, such as Bua, a quintet from Chicago all in their 20s, four of whom are All-Ireland competition winners on their instruments. There’s also Hanneke Cassel, a U.S. National Scottish fiddle champion.

“I very consciously wanted to do that mix” of younger and older musicians, Gusetti says. “A lot of energy, but a huge respect for the tradition … It’s kind of a nice fit for everybody to see how that works.” Like last year, the festival’s artists will be represented on a compilation CD that will be available at the festival and will benefit the BRT.

And the festival will again end with a nighttime session back at the BRT. Last year’s session, he says, went beyond the usual instrumental tunes into vocal songs and dancing all over the theatre. “Every two minutes, something would be trading off into something else.” Gusetti says that only 100 tickets will be sold to the session in the theatre, which has a capacity of 165, to keep the feel of a house session. “Just kicking back the chairs in the kitchen. It’s a nice big party.”

The Blackstone River Theatre Celtic Festival is Saturday from 11 a.m. to 7 p.m. at Diamond Hill State Park, on Route 114 in Cumberland. Tickets are $15, $10 for senior citizens and $5 for children between 6 and 16. By this point, they’re only available at the door. For more information, go to www.riverfolk.org/brtcf.