Updated 8:13 a.m.

Good morning on this ice-cold Wednesday.

In Manhattan, beneath a graveyard where Mayor Edward I. Koch, John Jacob Astor and more than 100 other New York City notables are buried, there lies a crypt.

And in that crypt — a cavernous space with dark corners, vaulted ceilings and the ashes of past parishioners — you may listen to classical music.

Crypt Sessions, which begins tomorrow underneath the Church of the Intercession, by Trinity Church Cemetery in Washington Heights, was started by the musician Andrew Ousley, who has also produced classical and opera concerts in a metal works factory in Gowanus.

“It’s a space that you just don’t expect to find in New York,” he said of the 2,000-square-foot crypt. “You’re running around outside — you’ve got bars, restaurants, et cetera — and you go, out of nowhere, through this cemetery and into a space that is just completely transformative.”