Coriolis, a 16-voice a cappella chamber choir, is inviting singers to apply for an open bass/baritone position during the current concert season. The ensemble, which will celebrate its 40th season in 2026-27, presents four concerts annually, with two in December and two in May. Rehearsals are held Monday evenings from 7:30 to 9:30 p.m. in Evanston. Community members who enjoy classical choral music are encouraged to share this opportunity with interested singers. More information about Coriolis, including performance recordings and a contact form for auditions, is available at www.coriolisacappella.org.