(Photo: Courtesy Ars Nova Singers)

The team at the Fiske Planetarium in Boulder loves to show off its sound system. The venue hosts late-night laser shows pairing flashy imagery with music by Pink Floyd or The Grateful Dead.

But four upcoming concerts at the planetarium will feature a very different soundtrack, courtesy of the 38 members of Boulder’s Ars Nova Singers.

The unusual concerts “combine the visual feast of the vast universe with the intimacy of the human voice,” according to Thomas Edward Morgan, artistic director of Ars Nova.

The choir presented its first concerts at the planetarium, located on the University of Colorado campus, in 2015. The singers performed beneath images of the solar system and the Milky Way.

The program for the upcoming shows leans heavily on contemporary composers, including music by Philip Glass, David Lang, Meredith Monk and CU-based composer John Drumheller.

Ars Nova will perform at the planetarium at 5 and 7 p.m. Saturday, and 6 and 8 p.m. Sunday, Sept. 4.

Hear Ars Nova perform Antoine Brumel's "Agnus Dei," one of the pieces on the upcoming program: