- "Ninten, Welcome... I always believed that you would find your way here. Your Great-Grand Mother Maria's love was scattered, scattered in the form of melodies. I have a melody for you. Listen and remember..."
- — XX Stone
The XX Stone is a gravestone that is found in Mother and its remake. It is located right next to Giygas' lair at the pinnacle of Mt. Itoi, and is also where the final piece of the Eight Melodies is received.
When the party has seven parts of the Eight Melodies and arrive at the peak of Mt. Itoi, Ninten checks the Tombstone, and a crystalline figure appears as a voice from nowhere welcomes Ninten. The voice then tells him that it always believed they would make it and explains what the Eight Melodies are. After that, the final part of the Eight Melodies plays, and the crystal splits up again. The crystal's glow bathes Ninten and his friends before dissipating, restoring all HP and PP and curing any status ailments.