How to describe Russia's Auktyon? As Moscow's wildest jazz-rock ambassadors? Former underground rebels who continue to spread passion and sonic rebellion? They have a new CD, "Girls Sing," that gives plenty of space to upper-echelon American guests such as keyboardist John Medeski and guitarist Marc Ribot.

If you like those names, you'll get a charge from Auktyon's uncompromising alternating of avant-garde, impressionism and all-out punk abandon. I've never heard a band like them before, and anyone receptive to energy and the unique should make a point of attending their Saturday show at the Oriental Theater.