Short answers, pulled from the story.
Final Fantasy Mystic Quest was released in 1992. The soundtrack album was first released on one compact disc by NTT Publishing on the 10th of September 1993. The game was released on Nintendo's Virtual Console in October 2010.
The soundtrack for Final Fantasy Mystic Quest was composed by Ryuji Sasai and Yasuhiro Kawakami. It was one of the first games bearing the Final Fantasy name not to be composed by series regular Nobuo Uematsu. Sasai recorded two remixes on his days off and personally played the guitar parts for the album.
The story of Final Fantasy Mystic Quest follows a youth named Benjamin who climbs the Hill of Destiny only to find his village destroyed by an earthquake. An old man tasks him with fulfilling an ancient prophecy to save the world from four Vile Evils who have stolen the elemental crystals. The game opens with Benjamin climbing the Hill of Destiny and ends with him sailing away to continue his adventure.
According to Square's publicity department, Final Fantasy Mystic Quest sold a total of 800,000 units. Roughly half of these units were sold in Japan. The game failed to generate the excitement expected from a Final Fantasy release and ultimately alienated fans of the series.
The main character in Final Fantasy Mystic Quest is a youth named Benjamin. He climbs the Hill of Destiny and meets a mysterious old man who charges him with fulfilling the knight's prophecy. Benjamin is seen still craving adventure at the end of the game and borrows the ship from Captain Mac.