I Megaphone is the debut studio album by British singer-songwriter Imogen Heap. It was released on 16 June 1998 by Almo Sounds. The album was primarily written by Heap, starting when she was 15 years old, with co-writing from Guy Sigsworth and Fil Eisler. It was first produced and recorded solely by Heap and Dave Stewart, and it was subsequently re-recorded alongside producers David Kahne and Guy Sigsworth. It is an alternative rock record with largely confessional lyricism, addressing themes ranging from adolescent drug use and revenge to perseverance and religion. The album's title is an anagram of "Imogen Heap".