Photo Credit: Julien's of Beverly Hills

Are you in the market for some moderately priced music memorabilia? If you are, you'll be saddened to know that a great piece of it just slipped out of your hands: According to Prefix, one of Johnny Cash's to-do lists, which you can see above, was just auctioned for $6,400 at Julien's of Beverly Hills.

There's no date on the note and most of the items on the list could have been completed during several decades, so it's difficult to tell when the list was written. According to the auctioneer's website, you may have actually already seen the list before: "This item can be seen on page 64 of the book, Cash: An American Man."

What do you think of the to-do list? Pretty clever, right? Let us know in the comments!