Last year I stayed up until sunrise listening to Bach, leaving the chapel periodically to chug the free Coffee Exchange coffee in the lobby. I tried, I really tried, to make it through to the end of the all-night marathon, but I left with dawn imminent and only one performer left to go. (Stupid coffee screwed with my sleep schedule for weeks, though. Be warned.) Curated by Sakiko Mori, this annual event’s great for Bach enthusiasts and equally great for those of us with only a passing knowledge of classical music, as sets range from traditional solo performance to strange electronic noodling.