Six by Sondheim is an HBO television documentary which pays tribute to Broadway composer and lyricist Stephen Sondheim. The film was directed and co-produced by James Lapine, based on an idea by Frank Rich and "centers on the backstory of six great Sondheim songs."
Stephen Sondheim relied on other artists to write lyrics the to his songs.
This article states that Sondheim was a composer and lyricist which indicates that he wrote the lyrics to his songs himself.
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