Monday: >> Over at Black Cat there’s a Pitchfork friendly line up of mid-tempo, indie folk, with John Vanderslice, Portastatic, and Brandon Butler. There’s sure to be some quality balladeering, but you’ll probably want to hit the 14th Street Caribou for some caffeine beforehand. $10. >> As for us, DCist is going to see The Sentiment at DC9. They’re loud, they’re fun, and they let you jump on stage. On a Monday, this is what…