“Letters in Space, at Play” (2011) by Scott Rettberg is an article discussing works of kinetic poetry published in the Electronic Literature Collection vol. 2 (including “The Sweet Old Etcetera”). The article contextualises contemporary works of kinetic poetry with the work of earlier artists and poets such as: Len Lye, Stéphane Mallarmé and F.T. Marinetti.
… the recent trends in electronic literature, towards the production of works that feature letters moving in space, often synchronized to a musical soundtrack, is not precisely a novel phenomena, but something that writers and artists have been experimenting with to some degree since the dawn of moving image technology.