This is a triumph: Using the musical blocks introduced in the latest version of indie world-builder Minecraft, YouTube user Tritex989 has managed to re-create Portal's theme song, "Still Alive," in its entirety -- minus some notes and with some transposing, due to the blocks' two-octave limitation.
Minecraft is a sandbox construction game created by Markus Persson and is currently in pre-release alpha. Minecraft development started around May 10, 2009.
The game involves players creating and destroying various types of blocks in a three dimensional environment. The player can form fantastic structures, creations and artwork across the various multiplayer servers in multiple game modes.