About this song:

A short walk north of town is a large tower created only from stone. It's the first dungeon you must complete in the game and it's also the easiest.
In Zelda fashion you find an item here that helps you defeat the boss, however in this dungeon rather than one item, you get two.

First is your sword, which you can upgrade later on in the game, and second is the Stone Glove, that allows you to pick up heavy objects.

To beat the boss of this dungeon you must dodge the rocks he throws at you, and then pick one up and throw it at him. This will leave him stunned, and allow you to crush him with your sword.