We recorded the vocals on or about Christmas Day in 2017. After a number of false starts, I finally got around to finishing the project this past week.
Unfortunately, no one shot any photos or videos of the vocal session, so the video just shows the Ardour timeline scrolling by.
Each vocal track was recorded separately, with the vocalist listening to a simple piano accompaniment through headphones.
As best as I can recall, I the mic was an AT4040, into a Grace m101, into a Focusrite Scarlett 2i2, into an old laptop running Ardour 5.x.