Diamonds Are a Girl's Best Friend Diamonds Are a Girl's Best Friend "Diamonds Are a Girl's Best Friend" is a jazz song introduced by Carol Channing in the original Broadway production of "Gentlemen Prefer Blondes" (1949), which was written by Jule Styne and Leo Robin. It was based on a novel by Anita Loos. The song is perhaps most famously performed by Marilyn Monroe in the 1953 film "Gentlemen Prefer Blondes". Monroe's character, Lorelei Lee, has been followed on a Transatlantic ocean liner by a detective hired by her fiancé's father, who wants assurance that she is not marrying purely for money. He is informed of
My Best Friend's Girl (song) the key of F. An organ is introduced in the first chorus, followed by a rockabilly guitar lick which leads to the second verse. The song is composed in contrasting verse-chorus form. The song was originally written and recorded in E major, one semitone lower, then the entire master tape was sped up to place it in F major. Many live performances show the band performing the song in E. The lyrics depict a man's frustration with a woman who is dating his best friend after the man dated her. The narrator coolly notes, "She's my best friend's girl, but