Question: Which computer game's DLC contains the song "Jingle Bell Rock" at the end?
About the article "Jingle Bell Rock", section "In popular culture".

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 The song "Hay poco rock & roll" is a DLC song in the Rock Band series.  
Like many simple, catchy and popular melodies, "Jingle Bells" is often the subject of parody.
"Jingle Bells, Batman Smells" has been a well-known parody since the mid-1960s, with many variations on the lyrics.
Bart Simpson sings this version on "The Simpsons", the first time being on "Simpsons Roasting on an Open Fire".
The Joker himself also sings it in the "" episode "Christmas with the Joker".
These lyrics were included in the 2013 film "Prisoners" starring Hugh Jackman.
In addition, comedian Phil Snyder recorded a full-length version of the song, adding new verses utilising other comic superheroes.
This same parody was also done in an episode of "SpongeBob SquarePants" with the lyrics being changed to match the context of Mermaidman and Barnacleboy.
Parodies or novelty versions of "Jingle Bells" have been recorded by many artists, and include Yogi Yorgesson's "Yingle Bells," Da Yoopers' "Rusty Chevrolet," Bucko and Champs' "Aussie Jingle Bells", The Three Stooges' "Jingle Bell Drag" and Jeff Dunham's "Jingle Bombs", performed in his "Achmed the Dead Terrorist" sketch.
Another popular spoof of the song is "Pumpkin Bells", a "Pumpkin Carol" which celebrates Halloween and the "Great Pumpkin".
It originated in the "Peanuts" series of TV specials.
"Jingle Bell Rock" by Bobby Helms pays homage to "Jingle Bells", directly referencing the source song's lyrics, but with a different melody.
Originally recorded and released by Helms in a rockabilly style, "Jingle Bell Rock" has itself since become a Christmas standard.
In the Brian Setzer Orchestra version of the song, the first occurrence of "one-horse open sleigh" in the chorus is changed to "'57 Chevrolet", most likely to better suit the band's throwback rock 'n' roll/big band style.
The first notes in the chorus have also been recorded in other Christmas songs, most notably a guitar passage at the end of Nat King Cole's "The Christmas Song" and Clarence Clemons performing a saxophone solo in the middle of Bruce Springsteen's "Merry Christmas Baby"; a piano is also heard playing these notes at the end of Springsteen's version of "Santa Claus is Coming to Town". 
  The Arnold Schwarzenegger movie "Jingle All the Way" (1996) references "Jingle Bells".
"Jingle Bell Rock" references "Jingle Bells".
"The Christmas Song (Chestnuts Roasting on an Open Fire)" by Nat King Cole quotes from "Jingle Bells" at the close of the song.
"Santa Claus is Coming to Town" performed live by Bruce Springsteen and the E Street Band quotes the melody from "Jingle Bells" at the close.
In the 1975 movie "One Flew Over the Cuckoo's Nest" starring Jack Nicholson, an instrumental version of "Jingle Bells" is played during the party scene.
"White Christmas" recorded by The Drifters in 1954 features a snippet of "Jingle Bells" sung at the close of the song.
"Jingle Bells" was the first song performed in space on December 16, 1965, when NASA astronauts Wally Schirra and Tom Stafford, aboard Gemini 6, played it on a harmonica and bells to Mission Control.
Both instruments are displayed at the Smithsonian National Air and Space Museum.  
On May 1, 2012, Sony announced the PlayStation Store Royale Contenders Sale – a "PlayStation All-Stars Battle Royale" sale to celebrate the announcement of the game.
The sale included discounts on titles such as "God of War Collection", "", "Killzone 3 Multiplayer", and "The Sly Collection".
The sale began on May 2 and ran for one week.
Sony collaborated with several retail outlets on a pre-order incentive.
The pre-order bonus consisted of a downloadable content pack, which included an exclusive set of costumes for all of the game's playable characters.
With the exception of the third-party characters, these costumes were later released as premium DLC on the PSN store; the third-party costumes were instead offered as free DLC several months after launch.
At gamescom 2012, Sony Computer Entertainment announced their new Cross-Buy program.
New PlayStation 3 copies of the game include the ability to download the PlayStation Vita version at no additional cost.
"PlayStation All-Stars", along with ' and ', were the first games announced for the program.
The music track "Genesis" by Justice was featured in several pieces of promotional material following the game's announcement.
The game uses the song "Finale" by Madeon during the game's opening.
A commercial including gameplay was created by the comedy team at Robot Chicken.