How so, because my understanding was that non-religious music/dancing/etc was not really something that was allowed in areas dominated by conservative religion in the region. This of course isn't going to be every area or every country, but it seems like something that would significantly reduce the available talent pool globally.
That's because your understanding is orientalist BS that is based on nothing but racist stereotypes. People still rudely blast loud music on their cars in the Middle East just like everywhere else in the world, and they sure as hell dance better than what white people call dancing. The most popular figures in the Middle East are Haifa Wehbe, Nancy Ajram, and Tamer Hosni, look up their music videos if you're serious about learning about the Middle East outside of police precincts or military bases.