Conversation so far:
What is the album Day of the Dead
Day of the Dead is the twenty-fifth compilation release benefiting the Red Hot Organization.
What artists worked on the album DOD
The performersof DOD  included Jenny Lewis, Matthew Houck (Phosphorescent), Lucius, Will Oldham, Moses Sumney, Sam Amidon, Richard Reed Parry, Matt Berninger, Justin Vernon, Josh Kaufman, Bruce Hornsby, and The National.

Question: What year was DOD done?
Self-contained rewrite: What year was the album DOD done?