It was premiered at the "Heart-to-heart concert" held on June 6, 2023 at the Baltic Hall (Fuchu City, Tokyo).

The "bakko" in the title is a former Aomori dialect word for an old woman, the same as "umakko" for a horse and "bekkokko" for a cow.

It's not a legendary story, but one day, an old woman who was going to deliver lunch to an old man who went out to work in the fields got tired on the way, and when she sat down on a stone by the roadside, the stone wouldn't leave her body, and the old woman turned to stone. This is a story to say. It's not a particularly instructive story, nor is it a story about being cursed, but it's a very silly story.

I intend to create a slightly comical look at an idyllic time.