Time for our next pilgrimage to the catacombs of the Green-wood Cemetery in search of revelations on offer nowhere else. Written for the versatile star countertenor Anthony Roth Costanzo, Aaron Siegel’s 14-part song cycle Watching Birds at The End of The World explores love lost and regained. Sae Hashimoto accompanies on vibraphone. The July 21 concerts, at 6:00 and 7:30, begin with an hourlong spirits tasting and a twilight walk through Green-Wood to its Catacombs. Discounted tickets are available for the July 20 dress rehearsal. —Matthew Gurewitsch