Kaluza without Klein

In nineteen-nineteen Theo had an idea
let Isaac and James join forces here
he sent it to Albert who sent it back
Theo, your electron runs like heck.

Along came Oscar in the name of the Sphinx
reminding us all to take care that it shrinks
too many dimensions too hard to tame
what if this isn’t the right way to fame.

Back to Theo who was suspicious of G
maybe we should just abandon thee
the electron goes first in the differential line
gravitation joins the series, to complete the rhyme.

A five-D photon will swallow the zoo
no free parameter to give to you
electromagic its not - you may check it out
with pencil and paper there’ll be no doubt.