Jem Aswad Senior Music EditorBroadly speaking, record-label bosses tend to have similar backgrounds, rising through A&R, promotion or management ranks, usually hitting a massive success that lands them the big job. And while Max Lousada, Warner Music Group’s head of recorded music, has followed some of that model, his background is unusual by any stretch, and is reflected not just in WMG’s approach to music but in the roster itself.