Brief recap, from yesterday: Under 100, the city’s newest and potentially only Manhattan-based DIY showspace, just happens to be located in the basement of one Damon Dash, former Jay-Z partner and Roc-A-Fella mogul turned local indie-rock cheerleader. Confused? Here is promoter Greg Finch’s thorough and not un-hilarious explanation. Photos of the subterranean concert space have been circulating for a few weeks now. But until last Thursday, when SOTC photographer and Rebecca Smeyne tagged along to a show in the building with the local power three-piece These Are Powers, nobody had been given free reign over the whole building. Who knew Dame rocked with Big Buck Hunter?