Boulder Philharmonic performs with the Frequent Flyers aerial dance troupe at Macky Auditorium in Boulder.

(Photo: Courtesy Boulder Philharmonic)

CPR Classical in Concert presents the Boulder Philharmonic giving the world premiere of a new piece by composer Stephen Lias live at 7:30 p.m. Saturday.

Music Director Michael Butterman leads the orchestra in a unique program called “Nature and Music.”

The program at Macky Auditorium in Boulder includes Lias’ new orchestral piece, “All The Songs That Nature Sings.” Lias has written more than a dozen pieces inspired by America’s national parks. He wrote this piece about Rocky Mountain National Park.

There’s also “From the Blue Ridge,” a mandolin concerto written and performed by Jeff Midkiff. And “Ghosts of the Grasslands” by Steve Heitzeg, who also writes about the natural world.

The concert concludes with audience favorite “Appalachian Spring” by Aaron Copland, performed with Boulder’s acrobatic troupe, Frequent Flyers Aerial Dance.

The broadcast, hosted by David Rutherford, will also feature intermission interviews with Butterman and Lias.

After Saturday’s concert, the Boulder Philharmonic heads to Washington, D.C., for a performance at the Shift Festival at the Kennedy Center for the Arts. The festival celebrates  unusual programming by American orchestras. This year’s schedule includes the Atlanta Symphony Orchestra and Chorus and North Carolina Symphony.

For more on live classical music in Colorado, check out CPR Classical’s Events Calendar.