Cohen, a veteran of 300 Entertainment, will lead Believe's first frontline foray into the United States, part of a broader U.S. strategy. [L-R]: Romain Vivien, Az Cohen, and Denis Ladegaillerie John Ricard Trending on Billboard French independent music giant Believe has teamed with former 300 exec Az Cohen for a new joint venture, called AZTEC, that will mark Believe’s first U.S.-based record label, the company announced Thursday (May 7). Cohen, the son of industry legend and current YouTube global head of music Lyor Cohen , will spearhead the new venture as its president and founder. Related Significantly, AZTEC marks Believe’s first frontline foray into the United States, after spending the past 20 years building a local-music empire in more than 50 territories around the globe. It also solidifies the company’s intentions in the world’s biggest music market, following last week’s announcement of a new label and artist solutions division in the U.S., headed by Thomas Maxwell .…