Keystone is the twenty-fifth album by trumpeter Dave Douglas. It was released on the Greenleaf label in 2005 and features performances by Douglas, Jamie Saft, DJ Olive, Gene Lake, Marcus Strickland, and Brad Jones. The music was written to accompany Roscoe 'Fatty' Arbuckle's silent films and a DVD containing the complete film Fatty and Mabel Adrift (1916) and a collage of Arbuckle's scenes set to "Just Another Murder" is included with the album.