A couple totally unconnected friends recommended seeing Tinariwen when they came through town a couple weeks ago. I didn’t really know anything about them, and it was quite expensive for a 9:30 Club show ($40!), but eventually persuaded myself to go check them out. Apparently they have a great back story, and I do have an interest in things like the status of Tuareg tribes, and they get good reviews, so it wasn’t that hard of a decision. And I don’t regret it or anything — actually they were rea…