The beauty of this back bend is that it allows accurate targeting of two, or three, vertebrae at a time – if you know where your back is stiff, you can use this exercise to target that spot precisely. The addition of rotation, and a shift of the hips and legs away from a single hand hold, winds on a fantastic fascial dimension. You do not need ladder bars as shown in this video; any support (like a heavy table) behind you can be used the same way.
Find the audio file of this video at https://supplementary-material.s3.us-west-2.amazonaws.com/Piano+Stool+Back+Bend.mp3.