Over the decades many a band has come and gone attempting to bottle the essence of Led Zeppelin and sell it back to the public as something original. Wolfmother came pretty close to hitting the mark a few years back and boasted a couple radio hits, but were largely derivative at the end of the day. Enter Rival Sons, a gritty four-piece out of Southern California. As the rollicking title track from Pressure and Time indicates, these gentleman definitely carry the Led Zep formula in their veins, but are making classic rock for 2011. Jay Buchanan’s voice, equally capable of a punishing snarl and Robert Plantian melodic fluidity, is the perfect complement to the blues rock foundation laid down by his Angeleno cohorts.