Sorry for the late response. I have been busy programming a web solution with my off-work time.
Thank you, Misaki, for returning and replying. It keeps my morale up. 🙂
You can definitely create a spinning doll music box using this method, but I was aiming for a more ambitious goal. One day I am going to rig a full faux 3D model in Spine with body movements. The experimental rig was actually bending simple legs. I call it a half-success.
Thanks, Harald, for chiming in. I think my setup has ways to go but this experimental setup is progressing to my goal. I am using ghosting GIF as my DeviantArt avatar. 8)