Nastia Liukin & Derek "Tango" - Dancing With The Stars 2015 Week 6 br br Couple: Nastia Liukin & Derek br Style: Tango br Song : Summer br Score :34 (9, 8, 8, 9) br br Nastia Liukin & Derek,Tango,Dancing With The Stars 2015 Week 6,Dancing With The Stars 2015 Spring Break,Nastia Liukin & Derek Dancing With The Stars,DWTS Season 20 Week 6,Dancing With The Stars,Dancing With The Stars 2015