SXSW's keynote speaker wasn't scheduled to play this week, save in spirit at a multi-artist Lou Reed tribute on Thursday at the Levis/Fader Fort. Among the many highlights was a set from singer-songwriter Joseph Arthur, who did a slow, woozy ''Pale Blue Eyes'' (while wearing a pale blue suit) and turned ''Venus in Furs'' into a bluesy Dust Bowl ballad. Thurston Moore tore through the recently-rediscovered Velvet Underground song ''I'm Not a Young Man Anymore'' with the New Wave Bandits, a kick-ass, co-ed band which was not Sonic Youth. The tribute seemed headed for an anticlimactic finale with Moby's anemic ''Femme Fatale'' -- but then Reed himself turned up out of thin air, guitar in hand. (Of all sets to guest on!) Together, he, Moby, and crew rolled through a soft, gorgeous, strummy/droney rework of ''Take a Walk on the Wild Side.'' Before leaving the stage, Reed shared some parting wisdom with the crowd: ''I love punk rock. And I was the first one!'' At least, that's what it sounded like he was saying over the house's ecstatic roar. [EW]