This is a system that was developed by Shurelia after she banned the direct use of Sound Science to the Humans. The Grathnodes can grant their power to the items as "Granted Magic", and they are basically minerals containing supernatural powers. Depending on the differences between their special characteristics, the crystals have one of these four colors: Red, Blue, Green and Purple, and these are the groups in which they are divided. Grathmeld is the process in which the characteristic wave frequencies (Spectrums) of the Grathnode Crystals are scanned by the Silver Horn, and then, it runs a program depending on that frequency, granting the Symphonic Power and effects carried in the crystal to the item. The people of the Wings of Horus developed this technique even further, to the extent of even being able
to make airships with it. The people that practice this technique are known as Grathmelders, or by the shortened form, Melder. This technique was spread at the start of the Third Era by a man and a woman called Gasaki and Leila. Who they were, from were they came, and what happened to them is still a mystery.
Grathmeld has so many applications and uses that anyone that masters it will be able to make any kind of item, ranging from the simplest medicine and healing potions, to high-class food, powerful weapons and armors, weird accesories, and even airships.
The most recognized Grathmelder in the current times is Professor Pochoma, who lives in Karulu Village with his granddaughter, Noelle, and gladly teaches Grathmelding to anyone who wishes to learn about it.