Sparks are the most prolific band that you might not have heard of. With a career spanning four decades, 22 albums, and countless genres, with musicians from Morrissey to Björk calling them a major influence, and with their most recent albums being just as relevant and cutting edge as their younger contemporaries, the time to discover Sparks is now. This current tour, titled "Two Hands One Mouth," puts the Mael brothers—vocalist Russell and pianist Ron—front and center without an accompanying band. This has resulted in their first-ever live album and a rare tour in the US. You may think this tour will offer a kind of "Unplugged" version of their songs, but this is far from the case. The show is full of the frenzied energy so indicative of Sparks, with song choices spanning their entire career, made even more beautiful by the piano-and-vocal-only renditions. ELIZABETH MOLLO Read our Q&A with Sparks' Russell Mael.