This is a series of the full "Pange Lingua" and "Tantum Ergo" chants, directly sourced from St. Thomas Aquinas' seminal chant melody of "Pange Lingua." It undergoes a series of harmonizations, with the sixth and final harmonization of the second verse of the Tantum Ergo functioning as a portmanteau to the beginning of my Choral et Fugue sur le thème du "Pange Lingua". This work was added a year after the Chorale Chant and Fugue were written, and it does well to serve as a Prelude, of sorts, to this work.