Instead of finding another manualiter piece that could be played with one hand and one foot, I decided to write something myself and create music specifically intended to be played with one hand and one foot.
I used material I wrote years ago for choir. I adapted it for organ and added a new section to create a simple but nice A-B-A' musical form. The harmonies used perfectly express the not so happy feelings I have for my present situation and I decided to go over the top and call this piece "Lamento".
One of the things I particularly like about this piece is the way it ends with a dissonant instead of a consonant, without it being too obvious.