"Diary" is a song by American singer-songwriter Alicia Keys from her second studio album, "The Diary of Alicia Keys". Written by Keys and Kerry Brothers, Jr. and produced by Keys, the song features the American group Tony! Toni! Toné! on bass, piano, guitar, organ and Wurlitzer, while Jermaine Paul provides uncredited additional vocals. It was released on June 29, 2004 as the album's third single. At one time, "Diary" had been released as a double A-side with "If I Ain't Got You".