There is also furnace[0] and mmlgui[1]. Which are recently developed programs that people have been using to create chiptune music for retro video game consoles. Including being used by Yuzo Koshiro[2].
"The idyllic tableau of peace and genteel elegance was the image he [Twain] wanted seen and remembered. The carefully cultivated projection of a happy family, an elderly father with his patrician daughters (both looking well and pretty), was an opportunity for the media-savvy Twain to recapture some of the credibility he must have felt he had lost in his battle with Isabel and Ashcroft."
From Mark Twain's Other Woman by Laura Skandera Trombley. It explores the forgotten media scandals and controversies that plagued the last years of Twain.
Interesting! Note, though, that according to the restored version [0], the scenes with his daughters was for Twain's personal use only and was not seen by the public.
The others parts with him in the doorway and walking around the house probably were very carefully choreographed as you suggest.
[0] https://github.com/tildearrow/furnace
[1] https://github.com/superctr/mmlgui
[2] https://x.com/yuzokoshiro/status/1800554520256360794