Music Disc

Music Discs (previously named Records) are items that can be played in jukeboxes. They play music made by C418. As of 13w24a, custom music can be added with the use of a resource pack.

Acquiring discs
The music discs "13" and "cat" are found in 8% of dungeon chests. All music discs can be obtained by getting a creeper to be killed by a skeleton's arrow.

The player can achieve this by positioning a creeper between a skeleton and themselves, then attracting the skeleton's fire. Since 1.2, mobs no longer attack a second target unless their first target is either killed or out of range, meaning the creeper does not have to be a 1-shot-kill like before. Skeletons will only fire if they are within 15 blocks of the player, so it is recommended that you hunt with speed potions, and be ready to sprint away or sprint attack the creeper if it gets too close. Creepers have 20 health points, or 10 hearts, so it is recommended that you hit them three times with an stone sword (3 hearts damage), then attract a skeleton to one-shot-kill the creeper. This also gives you a single chance to sprint-hit the creeper away if it gets too close. It is also recommended that you make the chase occur within either a plains or desert biome - or some other almost very flat land - so that you can look at the creeper and skeleton without having to look behind you for obstacles.

It is also possible to build a contraption capable of trapping the skeleton and creeper in such a way that the skeleton tries to shoot you through the creeper, but the creeper cannot attack the skeleton. A relatively simple design using pressure plates and pistons to trap the two mobs in their appropriate places is quite effective. Another method is to lure the creeper and skeleton into a hole with a trapdoor over it.

Discs
''Please note, these tracks have been shortened to 30 seconds, due to an agreement with the author. This does not apply to "11".''

Raw music files
The 12 music tracks created for records by C418 can be found in:
 * Windows: %appdata%\.minecraft\assets\virtual\legacy\records (AppData is hidden by default, directory changed sometime with the new Mojang launcher (originally %appdata%\.minecraft\resources\streaming\))
 * Linux: ~/.minecraft/resources/streaming/ (.minecraft folder is hidden)
 * OSX: ~/Library/Application Support/minecraft/resources/streaming/ (~/Library is hidden in 10.7)

As of the addition of resource packs to Minecraft, all music disk files are easily accessible in .ogg format, with previous versions of the game only having Cat and 13 in .ogg formats, with the other files in .mus format, which was decrypted by Minecraft on-the-fly.

Console Edition tutorial world disc locations

 * Chirp - X: 41, Y: 78, Z:153 (Through lava wall to the right of castle)
 * Mall - X: 102, Y: 60, Z: 268 (Sand temple)
 * 11 - X: 64, Y: 94, Z: 166 (Top of castle)
 * Cat - X: -42, Y: 57, Z: 248 (Swamp house)
 * Blocks - X: 65, Y: 71, Z: 176 (Underneath castle - downstairs)
 * Mellohi - X: 86 Y: 74 Z: 166 (Centre pathway - in front of castle)
 * 13 - X:106 Y: 75 Z: 166 (Entry to castle - checkpoint)
 * Far - X: -42, Y: 60, Z: 94 (Underwater house)
 * Stal - X: 59, Y: 62, Z: 27 (Nether - near blaze spawner)
 * Ward - X: 196, Y: 79, Z:71 (Castle Tower)
 * Strad - X: 28, Y: 62, Z: 8 (Dungeon Temple)
 * Where are we now (aka Wait) - X: 373, Y: 65, Z: -146 (Mooshroom biome)

Future
It has been stated that in the future, there will be 14 music discs to find in Minecraft, and the changelog for Beta 1.6 confirmed that the record player will support 'more than 15 songs.'

Trivia

 * One of the disc names, stal, is in Swedish; "stal" means "stole", but can also be "stål" without the ring diacritic, which means "steel".
 * Music disc "11", based on its data value, is the 11th disc in the game, is the only music disc that is shattered to pieces (this is why the end is static), lasts for 1 minute and 11 seconds, and outputs 11 when put in a comparator jukebox.
 * Chirp uses a sample from the Optigan disc "Bossa Nova Style" . It also sounds very similar to the song "The Orb Of Dreamers" from the PlayStation game series LittleBigPlanet, which also uses the sample. You can compare the two here.
 * In Console Edition, if you play the music disc "Cat", then after it is finished playing "Cat", it will play "Dog", which is a remix of Cat by C418 and is part of the Minecraft - Volume Alpha soundtrack album.