[clejack]

I went to watch the interview just because of this comment, thinking "of course it has to be more than just Indian singing," and it turns out it was a variation on that theme. Apparently it's called Konnakol. I've heard the style, but I wasn't familiar with the name until now.

As you said, though, everyone has blind spots. The world is vast, and there's a lot to miss. I have to wonder why the woman who did the singing never told Hans Zimmer what it was, or why he didn't ask, since the situation implies one of those two.