Some context: Avenged Sevenfold (sometimes abbreviated as A7X) is an American heavy metal band from Huntington Beach, California, formed in 1999. The band's current lineup consists of lead vocalist M. Shadows, rhythm guitarist and backing vocalist Zacky Vengeance, lead guitarist and backing vocalist Synyster Gates, bassist and backing vocalist Johnny Christ, and drummer Brooks Wackerman. Avenged Sevenfold is known for its diverse rock sound and dramatic imagery in album covers and merchandise. Avenged Sevenfold emerged with a metalcore sound on the band's debut Sounding the Seventh Trumpet and continued this sound through their second album Waking the Fallen.
In January 2009, M. Shadows confirmed that the band was writing the follow-up to their self-titled fourth album within the upcoming months. They also played at Rock on the Range, from May 16-17, 2009. On April 16, they performed a version of Guns N' Roses' "It's So Easy" onstage with Slash, at the Nokia Theater in Los Angeles. On December 28, 2009, the band's drummer James "The Rev" Sullivan was found dead at his home at the age of 28. Autopsy results were inconclusive, but on June 9, 2010, the cause of death was revealed to have been an "acute polydrug intoxication due to combined effects of Oxycodone, Oxymorphone, Diazepam/Nordiazepam and ethanol". In a statement by the band, they expressed their grief over the death of The Rev and later posted a message from Sullivan's family which expressed their gratitude to his fans for their support. The band members admitted in a number of interviews that they considered disbanding at this point in time. However, on February 17, 2010, Avenged Sevenfold stated that they had entered the studio, along with now-former Dream Theater drummer Mike Portnoy, to drum for the album, in place of The Rev.  The single "Nightmare" was digitally released on May 18, 2010. A preview for the song was released on May 6, 2010 on Amazon.com, but was removed soon after for unknown reasons. Mixing for the album had been completed in New York City, and Nightmare was finally released worldwide on July 27, 2010. It met with mixed to positive reviews from music critics but was well received by the fans. Nightmare beat sales projections easily, debuting at number one on the Billboard 200 with sales of 163,000 units in its first week. After finishing recording, in December, Portnoy and the band posted simultaneous statements on their websites stating that he would not be their replacement for The Rev. However, Portnoy did travel with the band overseas in December 2010 for three shows in Iraq and Kuwait sponsored by the USO. They played for U.S. Soldiers at Camp Adder, Camp Beuhring, and Balad Air Base. On January 20, 2011, Avenged Sevenfold announced via Facebook that former Confide drummer Arin Ilejay would begin touring with them that year. He was not yet considered a full-time member at this point.  Avenged Sevenfold performed at the Rock am Ring and Rock im Park festivals on June 3-5, 2011 alongside other bands such as Alter Bridge, System of a Down, and In Flames. On April 2011, the band headlined the Golden God Awards held by Metal Hammer. The same night the band won three awards for "Best Vocalist" (M. Shadows), "Epiphone Best Guitarist(s)" (Synyster Gates and Zacky Vengeance) and "Affliction's Album of The Year: " for Nightmare, while Mike Portnoy won the award for "Drum Workshop's Best Drummer" for his work on the album.  Avenged Sevenfold headlined the 2011 Uproar Festival with supporting acts Three Days Grace, Seether, Bullet for My Valentine, Escape The Fate, among others. In November and December 2011, the band went on their "Buried Alive" tour with supporting acts Hollywood Undead, Asking Alexandria, and Black Veil Brides.
What was the death of the Rev?
A: On December 28, 2009, the band's drummer James "The Rev" Sullivan was found dead at his home at the age of 28.

Some context: Mel Brooks (born Melvin Kaminsky; June 28, 1926) is an American actor, writer, producer, director, comedian, and composer. He is known as a creator of broad film farces and comic parodies. Brooks began his career as a comic and a writer for the early TV variety show Your Show of Shows. He created, with Buck Henry, the hit television comedy series Get Smart, which ran from 1965 to 1970.
For several years, Brooks had been toying with a bizarre and unconventional idea about a musical comedy of Adolf Hitler. Brooks explored the idea as a novel and a play before finally writing a script. Eventually, he was able to find two producers to fund the show, Joseph E. Levine and Sidney Glazier, and made his first feature film, The Producers, in 1967.  The Producers was so brazen in its satire that major studios would not touch it, nor would many exhibitors. Brooks finally found an independent distributor who released it as an art film, a specialized attraction. In 1968, Brooks received an Oscar for Best Original Screenplay for the film, beating such writers as Stanley Kubrick and John Cassavetes. The Producers became a smash underground hit, first on the nationwide college circuit, then in revivals and on home video. Brooks later turned it into a musical, which became hugely successful on Broadway, receiving an unprecedented twelve Tony awards.  With the moderate financial success of the film The Producers, Glazier financed Brooks' next film in 1970, The Twelve Chairs. Loosely based on a Russian 1928 novel The Twelve Chairs by Ilf and Petrov about greedy materialism in post-revolutionary Russia, the film stars Ron Moody, Frank Langella, and Dom DeLuise as three men individually searching for a fortune in diamonds hidden in a set of 12 antique chairs. Brooks makes a cameo appearance as an alcoholic ex-serf who "yearns for the regular beatings of yesteryear." The film was shot in Yugoslavia with a budget of $1.5 million. The film received poor reviews and was not financially successful.
What was that film about?
A:
Loosely based on a Russian 1928 novel The Twelve Chairs by Ilf and Petrov about greedy materialism in post-revolutionary Russia,