Though lesbian Canadian pop-rockers Tegan & Sara are on some dates of the Lilith Fair, they won't be on the stop at Merriweather Post Pavilion next week. Instead, they stop at the venue a few days earlier as part of the Honda Civic Tour. Paramore, an emo-pop band from Tennessee, is the multi-act concert headliner. Saturday, July 31. Gates at 5 p.m. Merriweather Post Pavilion, 10475 Little Patuxent Parkway, Columbia, Md. Tickets are $21 for lawn, $36 for pavillion. Call 800-551-SEAT or visit ticketmaster.com.