A SUPREMELY IMPORTANT BOOK—which until today I considered flawless—contains a major typo in the Introit for the Feast of the Transfiguration. Here is the Editio Vaticana (1908) which remains the Church’s official chant book, even in the Ordinary Form:
 
  
Can you spot which edition has a major error?
The 1953 Schwann edition has:
 
  
Fr. Weinmann’s 1909 version of the Editio Vaticana has:
 
  
My favorite book—“Mass & Vespers” (1957) by Solesmes—has:
 
  
The 1961 Solesmes Graduale Romanum has:
 
  
The Liber Usualis has:
 
  
If you need help, visit St. René Goupil and download the Introit for the Transfiguration.
