The Bolero of Fire is taught to adult Link when he first enters the Death Mountain Crater after completing the Forest Temple. The song is used to transport Link back to the warp point in the center of the Death Mountain Crater and can be used as either young Link or adult Link. In fact, you need to warp back to the Death Mountain Crater as young Link in order to plant a Magic Bean Plant but be careful as young Link cannot stay in the Crater long since he cannot use the 
Goron Tunic.
