Alex's Ocarina is an instrument and an important item found in both games. During the Silver Star and its remakes, Alex carries it with him and plays it for his own enjoyment.
In The Silver StarEdit
In the Silver Star and its remakes, using the ocarina in the menu allowed the player to listen to all tracks available in the game. In the original Sega CD version, his instument was a harp, and in Lunar: Silver Star Harmony, using it in the menu only plays a new track available only in Silver Star Harmony.
In Eternal BlueEdit
In Lunar: Eternal Blue Complete, you can find Alex's Ocarina in the Lost Labyrinth during the Epilogue. However, it is unknown why it was left there. But, like in Silver Star Story Complete, it allows the player to listen to all tracks available in the game.