I have once again taken the SSPX hymn in honour of Saint Pius X, and replaced the lyrics.

First, the Latin. The versions (there are three) begin with Sacrosancta Trinitas. They are in the form akin to that of the Trisagion, where each individual Person is addressed.

Second, the English. It is a metred version of the first Latin version.

Download away if you find them prudently useful.