Music Block

A Music Block is a block type planned for Beta release, but not yet available in the current Beta build.

Quoted by Notch in a Jan. 6 blog post, "Oh, and I’ve finally committed the Music Blocks to the repository. (Oh, wait, no, I didn’t.. Doing so broke git, so we’re changing to svn because git is horrible and evil)"

It appears that Music Blocks will be a new type of block, and will allow users to create musical notes within the game.

In response to a question about how they work, Notch said: "right click to tune (2 octaves). Left click or redstone trigger to play. The material under the block sets the instrument"

It is unknown where Music Blocks would be found, or how they would be crafted.