Secret Language doesn’t exactly sound like the band picking up where it left off. (For one thing, the band already picked things back up, sort of, reconfiguring their lineup, adding a guitarist, and releasing a self-titled album as Knot in 2020.) Furman’s sauntering basslines and Ian Becker’s drumming—which can tightly punctuate the vocal melodies or inject chaos into a song’s climax—are carried over from Krill 1.0. They’re joined by a new guitarist, Andrew Clinkman, who often prefers guitar parts that chug or sprawl over the band’s usual wiry, jittery riffs. Secret Language also features additions that would have felt out of place on previous Krill records: vocal harmonies, violin, and saxophone, performed by members of local bands in Chicago, Krill’s new home base.…