Francesco Roncalli Francesco Roncalli Bergamo Francesco Roncalli is a Producer Singer and Composer of Indie Electronic Music Since 2008. Now in cooperation with Davide Casillo on Guitar. Drummer and electronic composer of the duo "XO" (produced by Bjorn Thorsrud of Smashing Pumpkins) in recent years he worked with Morris Albert (Brazilian Singer and composer) and Enzo Miceli (Italian Producer).