Alexander "Sasha" Krivtsov is a Russian bassist, best known as the bass player for the house band on the TV reality shows Rock Star: INXS, Rock Star: Supernova and The Voice. He has played with singer-songwriter Vanessa Carlton. He toured and recorded as bassist with Taylor Swift [Starlight ], Cher, Tina Turner, James Blunt, Shakira, Christina Aguilera, Billy Idol, Badly Drawn Boy, and New Radicals. Krivtsov and the House Band toured the United States and Australia with Paul Stanley in October/November 2006 and April 2007, respectively.