Can't make it to the concert Thursday night? See the CSO up close and dressed down as they rehearse Alan Elkins' Double Concerto on Tuesday, January 15th at 7:45pm in the Tivoli Theatre! Tickets are only $8 - don't miss out on this unique and fun opportunity! Open Rehearsal attendees should enter through the backstage door, near the corner of 7th and Chestnut. The front doors of the Tivoli will be locked. Check-in with security and an usher will escort you to your seats.