"11" refers to both a song composed by C418, and a music disc that plays the song when inserted in a jukebox. The music disc is obtained from creepers killed by skeletons.
Because TNT ignited by a flaming arrow attributes all resulting kills to the entity that fired the arrow, a skeleton igniting a TNT block due to holding a bow enchanted with Flame, or shooting through lava or fire, also causes any creepers killed in the explosion to drop a disc.[1][2]
"11" begins with vinyl static, followed by the sounds of someone walking on or breaking stone blocks, heavy breathing, and rustling. Haunting background noises are heard throughout the recording, resembling the ambient sound effects that play in the game's caves (and by extension, the sounds of the disc "13"). After the background noises quiet down for a moment, metallic clicking or scraping noises can be heard, followed by coughing, sounds of page-turning, then more clicking or scraping.
The background noises resume more loudly, and the sounds of faster footsteps or breaking stone blocks can be heard, which accelerate until they are replaced with dirt sounds as the background noises approach. A loud, distorted noise is heard roughly just as the recording abruptly stops. At this point, one hears only quiet beeping, vinyl static, and a hissing noise, and the track ends.
"11" plays for exactly 1 minute, 11 seconds, and 111 milliseconds. That makes it the shortest music disc.
Usage
Like all music discs, using the "11" music disc on a jukebox causes the jukebox to play the song.
If the player places a redstone comparator besides a jukebox playing "11", it emits a redstone signal of 11.
Music disc "11" now uses the .ogg format. Before, "cat" and "13" were the only discs in the .ogg format; all the other discs were in the .mus format, which was decrypted by Minecraft on-the-fly.
With the introduction of jukebox song definition, music disc "11" now has an associated .json jukebox song definition under data/minecraft/jukebox_song
The ID of music disc "11" has been changed from record_11 to music_disc_11.
Issues
Issues relating to "Music Disc 11" are maintained on the bug tracker. Issues should be reported and viewed there.
Trivia
Within the disc are sounds, in order of appearance, of stone and dirt or gravel. At the time disc "11" was made, footstep sounds, placing sounds, and breaking sounds were the same for the respective block. It is unknown exactly what the character was doing when these sounds were played.
The static at the end of Disc 11 viewed in a spectrogram. Steve's face can be seen here as well as the numbers 12418.The numbers 12418.
If the .ogg file for "11" is turned into a spectrogram in an audio editor, the static at the end displays an image of Steve's face and the numbers 12418. The numbers are a visual signature, where "C" is hexadecimal for "12", and combined with "418" creates "C418".
There is a track that is exclusive to the album Minecraft - Volume Beta called "Eleven", which has the same length of 1:11 and begins with the same vinyl static sound before being abruptly interrupted by a record scratching sound and switching to a new, calm piano piece.
C418 once imagined that the "monster" chasing the person in "11" is himself "being a weird monster that occasionally records songs from strangers and then dies in '11'".[3]
Music Disc
Added music disc "11". It is unobtainable in Survival mode.
The texture of music disc "11" has been changed.
