For the launch of Samsung’s Galaxy Life Fest at SXSW, held Friday evening (March 11) for a few hundred in a former Austin post office downtown, it was a meeting of the old school and the new school with performances by The Strokes and The Arcs. One might think that the latter, the latest project from The Black Keys’ Dan Auerbach, might’ve been easily upstaged in this scenario. “Five years ago we started recording,” recalled Auerbach during a pre-show interview.