The nine pure tones of the Solfeggio list, from low to high. The list is a modern spiritual interpretation popularised in the 1990s; there is no scientific evidence and lists vary between sources. For curiosity and listening practice, at a low volume.
0/9 parts listened
✦T · Traditional/spiritual practiceEach part's tone sits on a log-frequency ring axis, computed like the field's axis. Active part: 174 Hz.Axis 174 Hz-963 Hz; low inside, high outside.
Parts are not locked; progress stays on this device. Some of these sounds are based on tradition; others have insufficient scientific evidence. You can review the evidence level in each session’s details.