The divas of Forte Chicago will perform the Chicago premier of “The Gauntlet” at three lunchtime pop-up concerts near the Loop as part of the Make Music Chicago celebration on June 21. “The Gauntlet” is an interactive choral presentation by composer Sxip Shirey, where the audience is encouraged to walk between the singers. Forte Chicago is an ensemble of women who use comedy, spectacle, and improvisation to push the boundaries of operatic entertainment. Check the Make Music Chicago online schedules for times and locations.