Nintendo owns the copyright for this song.
Koji Kondo gets the credit for composing this music. All credit for tabbing it out into classical guitar goes to Kabukibear (find him on Youtube). I was simply the middle-man and put the tabs into notation for easier reading.
*Note: The low D and A that are played every other measure are played with a thumb sweep, and they should just ring out until the next time they are played.
Also, the key isn't the same as the original song, for this key was just the easiest to play it with.