fantasy books such as J. R. R. Tolkien's The Lord of the Rings. According to Keiji Terui, who wrote the backstory in the first game's manual, the location named Death Mountain was initially a working title for the legend of the Triforce which was written with inspirations from the battles of medieval Europe. The Master Sword was introduced as Excalibur in the French version of A Link to the Past, which originates from the legend of King Arthur in the Welsh collection of Mabinogion. Celtic mythology also inspired the name of Link's steed, Epona, based on the Celtic goddess of fertility. Hearing of American novelist, socialite and painter Zelda Fitzgerald, Miyamoto thought the name sounded "pleasant and significant". Paying tribute, he chose to name the princess after her, and titled it The Legend of Zelda. Link and the fairy were inspired by Peter Pan and Tinker Bell. When making the series made the transition to 3D, the combat system of Ocarina of Time was based on the chanbara (samurai) style of Japanese sword fighting. Audio Games in The Legend of Zelda series frequently feature in-game musical instruments, particularly in musical puzzles, which are widespread. Often, instruments trigger game events: for example, the recorder in The Legend of Zelda can reveal secret areas, as well as warp Link to the Dungeon entrances. This warping with music feature has also been used in A Link to the Past and Link's Awakening. In Ocarina of Time, playing instruments is a core part of the game, with the player needing to play the instrument through the use of the game controller to succeed. Ocarina of Time is "[one of the] first contemporary non-dance title[s] to feature music-making as part of its gameplay", using music as a heuristic device and requiring the player to utilise songs to progress in the game – a game mechanic that is also present in Majora's Mask. "The Legend of Zelda Theme" is a recurring piece of music that was created for the first game of the franchise. The composer and sound director of the series, Koji Kondo, initially planned to use Maurice Ravel's Boléro as the game's title theme, but was forced to change it when he learned, late in the game's development cycle, that the copyright for the orchestral piece had not yet expired. As a result, Kondo wrote a new arrangement of the overworld theme within one