Green Day's Billie Joe Armstrong plays "Last Night on Earth" with dog Rocky

(CBS) - Green Day's Billie Joe Armstrong sent out a tweet of an adorable video of him playing the song "Last Night on Earth" on piano while his dog, Rocky, sings (or woofs) along.

The song was made famous on the album "21st Century Breakdown" and later became a major centerpiece to the Broadway hit "American Idiot" (which this blogger saw and thought was amazing.) The beautiful song is turned into a cute duet by man and dog that you are sure to love as much as I did.