We know you can't be everywhere at once, and that's why you have us: The latest edition of our concert slideshow, "Out on the Weekend," features photos from performances by Devo, Bishop Allen, Dinosaur Jr., Javelin, Sonic Youth, Sleigh Bells, the Feelies, tUnE-YaRdS, and Dirty Projectors, with awesome surprise appearances by Curren$y, Mos Def, and David Byrne. Clicking through is like actually being there, but with less sweat and cheaper beer.