Voltaire Twins is an Australian synth-pop/indie/new-wave band from Perth, Western Australia. They are basically consisting of two twins however, on the show they are accompanied by a third synthesiser player and a drummer.
I should stress that Voltaire Twins is one of the most remarkable indie band that I've listened recently. Both the live performances and the albums of the band is awesome. They will probably be very popular in upcoming days.
I also suggest you to see their live performance. The colours, the atmosphere, the lights, the customs and the spirit... Seems everything is legit and perfectly balanced. I do really hope to see the band around around and to get their show.