O3 features the spanish accordionist Esteban Algora, the italian flutist Alessandra Rombolà and the norwegian percussionist Ingar Zach. O3′ music is about the extraordinary blend of the infinitive colors that the three members puts on display with their instruments and the way they create their original archetechtonical structures using improvisational and compositional parameters side by side. O3 works across musical genres having worked with Merce Cunnigham Dance Company, the norwegian experimental circus company Stella Polaris and with the musicians Jane Rigler (USA, flute), Kim Myhr (NOR, guitar) and Jim Denley (AUS, sax/flute). Their debut album: "…de las piedras”, was released on the english label Another Timbre in 2007 and received excellent reviews.