Never underestimate the power of jazz -- just ask singer-songwriter Hanna Rifkin. After opening her eyes and ears to the swinging ease of Louis Armstrong, the hard-rocking Roxy frontwoman shed her guttural ballads for a more honey-coated sound similar to the vocal purity of Ella Fitzgerald. Backed by her illustrious band The Handsomes, the pairing punches up the delights of classic jazz with little bits of '60s flair, Americana and pop. Songstress Katy Stephan joins the band on stage, adding a sweet and salty element with her delicate vocals and intense piano-play. Don't miss out on these artists as they bring sophisticated energy and soul to Doc's Lab in San Francisco.