Envelope
The envelope contains a letter:
Dr. Charley Patton
Adjunct Professor, Folk Song Department
Scriabin Institute for Accuracy in Music
Dear Professor Patton,
I am delighted to assist you in identifying the song on the piano roll you included. After much research, I have determined that the song is
The letter ends here, but you notice that someone has taken a pen and scrawled "enter" above the space at the end of the letter.