Clarence Brown Theatre will hold a virtual 50th Birthday Bash with a 1970s theme so find your bell-bottom jeans and disco balls. The event will be held via the Lunchpool platform; everyone is welcome, but an RSVP is required to receive the Lunchpool link to attend. Sponsorships also are available. An online auction through the Handbid platform will open Monday, Nov. 9. All donations will go toward the CBT Artists Endowment. The Clarence Brown Theatre building opened in November 1970.