The Frequency Series, programmed by Reader staff writer Peter Margasak, presents new classical and experimental music at Constellation nearly every Sunday night. Its first concert was in April 2013, and the series celebrates its (almost) fourth anniversary with its second annual festival, which this year runs from Tuesday, February 14, through Sunday, February 19. Constellation hosts four of its seven concerts; the other three are at the Museum of Contemporary Art, the U. of C.’s Bond Chapel, and the Art Institute’s Fullerton Hall.

Nomi Epstein, who leads the ensemble Aperiodic (veterans of nine Frequency concerts), affirms that the series has enabled some crossover. “Since the series is for new and experimental music, I do see an interesting exchange happening with audiences between these two areas,” she says. “Knowing there’s one night of the week devoted to this kind of music, there are certainly audience members who attend Sunday-evening concerts because they know the series exists but who don’t necessarily know the performers for that night. In this way, yes, there are new faces in the audience.”