A modern sound practice

The solfeggio frequencies are a recent construction, and their claimed ancient and healing properties are not established by evidence; the atlas presents them as a modern sound-healing system with a datable and traceable origin rather than as an ancient or scientifically validated practice, and notes that the connection to the historical solfege is numerological, not musicological.

The entries give each frequency its assigned purpose and chakra. The chakras the frequencies are keyed to are treated in their own category, and the practice belongs among the modern correspondence systems.