Stop by Vendetta (1212 H Street) tonight for free opera, cabaret, and classics of musical theater from Opera on Tap. You'll hear songs from Grease, Porgy and Bess, Aladdin, Carmen, and more. Tonight's artists include: David Chavez, Rachel Sitomer, Elizabeth Mondragon, Carla Rountree, Mandy Brown, Patrick Cook, and Molly Simoneau. 7-9:30pm. No cover, but cash donations to Opera on Tap are accepted. Tonight is $2 slider night (two drink minimum). Show up early for Happy Hour from 5-7pm.