Two years ago I said to myself, “Wolfmother’s gonna get pretty friggen big.†But never would I think the day would come where I would see a Wolfmother billboard hovering above the giant guitar at the Hard Rock Hotel in Las Vegas where they were scheduled to play that night with L.A.’s Silversun Pickups. This show marked the final performance of a six-date U.S. stint and the idea to go out with a bang was quite obvious in both bands’...