Title: LETTERS
Content:  LETTERS is an epistolary novel by the American writer John Barth, published in 1979. It consists of a series of letters in which Barth and the characters of his other books interact. In addition to the Author and Germaine Pitt (or 'Lady Amherst', unrelated to any of Barth's previous novels), the correspondents are Todd Andrews (from The Floating Opera), Jacob Horner (from The End of the Road), A.B. Cook (a descendant of Burlingame in The Sot-Weed Factor), Jerome Bray (associated with Giles Goat-Boy and Chimera) and Ambrose Mensch (from Lost in the Funhouse). The book is subtitled "An old time epistolary novel by seven fictitious drolls & dreamers each of which imagines himself factual." The structure is such that when the first character of each of the letters in the book are placed on a calendar according to their dates, and the individual months are turned sideways, they spell out the subtitle. In addition, the marked dates spell out the word "LETTERS."
Title: The Letters (2014 film)
Content:  The Letters is a 2014 American biographical drama film directed and written by William Riead. The film stars Juliet Stevenson, Max von Sydow, Rutger Hauer and Priya Darshini. It was produced by Colin Azzopardi, Tony Cordeaux, and Lisa Riead. It was released theatrically by Freestyle Releasing on December 4, 2015.
Title: The Letters (novel)
Content:  The Letters is a novel by American writers Luanne Rice and Joseph Monninger. The novel was first printed in September 2008 in hardcover by Bantam Dell, a division of Random House, Inc.  The Letters is a fiction, romantic novel. The Letters tells a story of Sam and Hadley West who write each other a series of highly emotional letters during the course of their separation. The letters outline the course of their relationship before and after the death of their son in an airplane crash.
Title: The Letters (2014 film)
Content: Juliet Stevenson as Mother Teresa ; Rutger Hauer as Father Benjamin Praggh ; Max von Sydow as Father Celeste van Exem ; Priya Darshini as Shubashini Das ; Kranti Redkar as Deepa Ambereesh ; Mahabanoo Mody-Kotwal as Mother General ; Tillotama Shome as Kavitha Singh ; Vijay Maurya as Maharaj Singh ; Vivek Gomber as Ashwani Sharma ; Pravishi Das as Dinsha Sahu ; Rustom Mistry as Doctor 
Title: Love Letters (play)
Content:  Love Letters is a play by A. R. Gurney that was a finalist for the Pulitzer Prize for Drama. The play centers on two characters, Melissa Gardner and Andrew Makepeace Ladd III. Using the epistolary form sometimes found in novels, they sit side by side at tables and read the notes, letters and cards – in which over nearly 50 years, they discuss their hopes and ambitions, dreams and disappointments, victories and defeats – that have passed between them throughout their separated lives. The play is a performance favorite for busy name actors, for it requires little preparation, and lines need not be memorized. It was first performed by the playwright himself with Holland Taylor at the New York Public Library, then opened in 1988 at the Long Wharf Theatre in New Haven, Connecticut, with Joanna Gleason and John Rubinstein.
Title: The Letter (opera)
Content:  Both Moravec and Teachout made their operatic debuts with The Letter. Teachout began writing the libretto in November 2006 and started posting an ongoing account of the opera's genesis and development on his blog, About Last Night, when the commission was announced by the Santa Fe Opera on May 9, 2007. He describes it as "a cross between a verismo opera like Tosca and a film noir like Double Indemnity or Out of the Past. We don't want The Letter to sound old-fashioned—Paul's musical language is in no way derivative of Verdi or Puccini—but we do want it to move fast and hit hard." Later 
Title: The Letters (1973 film)
Content:  The Letters is a 1973 American made-for-television drama film starring John Forsythe, Jane Powell, Dina Merrill, Leslie Nielsen and Barbara Stanwyck. It premiered as the ABC Movie of the Week on March 6, 1973. It was followed by a sequel, Letters from Three Lovers (1973).
Title: Love Letters (1999 film)
Content:  Love Letters is a 1999 American made-for-television drama film directed by Stanley Donen and based on the 1988 play by A. R. Gurney. Gurney adapted his own original play, dramatizing scenes and portraying characters that were merely described in the play. Donen had envisioned it to be a feature film, but a limited budget restricted him to make a TV movie and he shot the film in only 17 days. It was his last film before his death in 2019. Love Letters originally premiered on ABC on April 12, 1999.
Title: The Letter (opera)
Content:  The Letter is an opera by composer Paul Moravec and librettist Terry Teachout. It was commissioned by the Santa Fe Opera and was premiered there on 25 July 2009. The opera is based on The Letter, a 1927 play adapted by W. Somerset Maugham from one of his short stories. The play has been filmed twice. The first version, called The Letter, was made in 1929 and starred Jeanne Eagels. The better-known 1940 version, also called The Letter, starred Bette Davis and Herbert Marshall and was directed by William Wyler. The inspiration for Maugham's story and his subsequent play came from a real-life event which took place in Kuala Lumpur in Malaya in April 1911.
Title: The Letter (opera)
Content:  Critics generally found the opera entertaining, though some reviews questioned the emotional depth of the production and the technical intricacies of the score. There was general agreement that The Letter was "opera noir", a clear homage to the film noir of the 1940s and 1950s. In Opera News Simon Williams wrote that The Letter "was intended to be an instantly accessible work with wide popular appeal. It may be just that. For a start, the opera is an improvement on the play, which is verbose, faultily structured and moralistic; instead, Teachout's terse libretto recaptures the stringent economy of the much finer story, also by Maugham, upon which 

Question: What genre is LETTERS?
Answer: epistolary novel.