Back in the olden days, when I walked to school barefoot in the snow uphill both ways, I learned "Für Elise" out of Suzuki Piano School Volume 5. In m. 76 (third measure in the below image), there is a lovely E7 chord.
Imagine my horror and dismay when today I heard the piece performed without the D, simply an E major chord. Yet, a brief perusal of IMSLP confirmed that, indeed, the chord is a humble E major, not a lovely E7. For example, here is the first edition (other editions agree):
What is the origin of the E7 chord in the Suzuki edition? Will Beethoven forgive me? Does the world still have meaning? Is there a Santa Claus?
Note: The St. Petersburg edition on IMSLP also contains the note in question.

