417 Hz is the Solfeggio frequency people reach for when something needs to shift. New season of life. New chapter at work. New habits taking hold. A relationship ending or starting. 417 Hz is associated with the moment just before a change becomes real.
Where 417 Hz comes from
In the classic Solfeggio sequence, 417 Hz follows 396 Hz — associated with the second syllable, Re, from the medieval hymn Ut queant laxis. Modern sound-healing teachers linked it with movement: after you have released what is heavy (396 Hz), you create space for what is next (417 Hz).
What 417 Hz is commonly associated with
- Change and transformation
- Clearing patterns that have outstayed their purpose
- Preparing for a new habit, project, or season
- Transitions — moving house, changing jobs, closing chapters
- Momentum when you feel stuck
Listeners sometimes describe 417 Hz as having a "stirring" quality — a sense of motion. If 396 Hz is settling, 417 Hz is leaving the station.
The scale-based math
When music is retuned to 417 Hz, the whole scale shifts so that G#4 lands at exactly 417 Hz. The rest of the scale moves proportionally, placing A4 at roughly 441.74 Hz — only a touch above the standard 440. The pitch shift from standard tuning is subtle, which is part of why 417 Hz works well on familiar music.
How to listen to 417 Hz
You have five practical ways to experience 417 Hz — the right one depends on how you already listen.
- Dedicated player for 417 Hz: 417 Player Plus — iOS, Android, macOS, and Windows app focused specifically on 417 Hz. $19.99 one-time per platform; free trial.
- Player for every Solfeggio frequency: Solfeggio Frequencies Player (SFP) covers all 10 frequencies in one app. $119.99 one-time.
- Streaming Apple Music or Audius: HZP is a dedicated retuning player across web, mobile, desktop, and TV. Free tier available.
- Streaming Spotify, YouTube, or anything else in a browser: Music Retuner — browser extension (Chrome, Edge, Firefox, Brave) from $4.99/mo, or $99.99 one-time for Safari on iPhone, iPad, and Mac with Family Sharing.
- Convert music files: Song Retuner is free in-browser for one-off conversions; HZ Detect handles batch conversion of whole libraries on Mac or Windows.
The honest take
417 Hz will not cause change by itself. What it can do is support the emotional work of being in a transition — the uncomfortable in-between where the old is gone and the new is not yet solid. Listening with intention during that window may help you move through it more honestly.
Try 417 Hz the next time you sit down to plan a new habit or close out an old one.
Try 417 Hz on your own music
Pick the tool that fits how you already listen.