An Anagrammed Alternate Gatsby

In my younger and more vulnerable years... 
...a gerbil ruined very early neums...

(In this variation on a classic jazz-age novel, Scott Fitzgerald's opening words are completed with some by Ulysses Poe. Together they begin relating the story of a former mysterious American millionaire turned novice choir monk who composes liturgical texts, setting them to primitive written forms of chant only to have both words and notations set on fire by a jealous Mongolian hamster bent on harassing the cloister.)