>> One lucky DCist reader will be at the Rock and Roll Hotel tonight on us for The Cinematics, The Clientele Changes, and Cedars. But with $8 advance tickets ($10 at the door), there’s no excuse for you not to head down and enjoy the show even if you don’t win. Doors at 9 p.m. >> Wednesday night is always the best (the only?) night to head to Madam’s Organ, when the bar serves…