In celebration of National Opera Week, the Chicago Opera Theater has sent its members to random places throughout the city to give short "Pop-Up Opera" performances. You can get tips on the locations and times on COT's website or Twitter. As an added bonus, if you tweet about the "Pop-Up" performance you're seeing (make sure to include #popupopera), you could win COT subscriptions, tickets to Kathleen Battle's performance with the Chicago Children's Choir, and $50 restaurant gift cards. more ›