Arora, stylized in allcaps with the first R backwards, and formerly called Sonos, is a vocal band based in Los Angeles. Sonos originally grew out of a 2006 recording project and began performing and touring in 2008. The group's repertoire centers on vocal covers sung a cappella with the use of effects pedals. Sonos competed in the third season of The Sing-Off on NBC and was eliminated on the fourth episode. The group changed their name to Arora in 2013 in preparation for the release of their third album, "Bioluminescence."