"Hali" is a single by Pedro Meirelles, Eugene Hütz & Serj Tankian.
At a 2009 edition of his "Balkan Forro" event in Rio de Janeiro, Hütz (Gogol Bordello's frontman) found out about Meirelles's heavily percussive classical material, and by mid-2010, contacted the local composer/producer to suggest a collaboration focused on the common elements of their distinctive sonic roots. The idea, which seasonally took shape, later on received the illustrious contribution of Tankian, at the occasion of his band System of a Down's performance during Rock in Rio 2011, following an USA tour SOAD and GB had recently done at the time. Years later, the resulting experimental rock track, a hybrid of Northeastern Brazilian rhythms, Eastern European harmonies and ritualistic chanting, finally becomes available to the public.