Steve Martin's Song For Diane Keaton When Steve Martin was celebrated at the Kennedy Center Honors several years ago, Diane Keaton sang a song at the event in his honor. On April 9, 2007, when Keaton was feted in the Film Society of Lincoln Center's annual Gala Tribute, Martin returned the favor with this banjo performance. Many in the audience laughed, but the song was an essentially sincere and lovely gesture.