Why we're telling you this
The line between “made by AI” and “made with AI” is becoming meaningful. Some apps generate everything from a prompt and pretend a person made it. Some pretend they don't use AI at all. Both feel dishonest.
We use AI tools heavily. We don't hide it, and we don't lead with it. The work either moves you or it doesn't. But you have a right to know what's in the box you're listening to — and what it took to get it there.
Where AI is in the work
Music generation
Every track in the Harmonic 639 catalogue is generated using Suno, a music generation platform. We write the prompts, structure the compositions, choose the genres and emotional arcs, then iterate — often dozens of times per track — until the result hits the bar.
I've personally lived with these Codes for the last 6 months — listening to the tracks that made it into the app hundreds of times each. Every choice in this app reflects what those frequencies actually did for me. As I listened daily, my own life expanded — and the app you see today is a direct expression of that. Tracks that didn't move me on repeat didn't ship. The catalogue is small and precise on purpose.
Affirmation writing
Affirmations are drafted with AI assistance (primarily Claude) using detailed intent briefs we write for each Code. Drafts go through human editing, voice-tone refinement, and a final read-aloud check before they get embedded into the music. We don't ship words that haven't been read by a human and felt right.
Tools like affirmations, self-hypnosis, and guided meditations with embedded frequencies have worked for me personally. Harmonic 639 isn't here to put any of that down. It exists to take the best parts of each — the parts that actually help people change — and smooth out the things that put most people off using them in the first place.
Visual content
The cinematic visuals you see in the app — backgrounds, scene transitions, in-track imagery — are generated using Google Veo, Gemini, and related image and video models. We art-direct each scene, prompt iteratively, and curate the output. The Santorini scene on this site is an example: AI-generated, human-selected, refined, and approved as the brand visual.
Video editing & assembly
Final videos are assembled with Remotion (a programmatic video framework) and traditional editing tools. The pipeline — captions, lyric overlays, scene timing, audio sync — is human-engineered and human-tuned per Code.
Software, this website, and the app itself
The code that powers Harmonic 639 — the app, this website, the backend that delivers your sessions — is written collaboratively with AI coding assistants. A human reviews every piece of code before it ships. The architecture, design decisions, and product calls are made by people, not models.
Where AI is not
We want to be just as clear about what AI doesn't do here:
- We don't generate fake reviews, testimonials, or social proof. If you read a review of Harmonic 639 anywhere, it came from a real person.
- We don't auto-publish work that wasn't reviewed. Every track, every visual, every line of copy on this site has been read, listened to, or watched by a human before going live.
- We don't use AI to make medical claims.639 Hz is a tuning choice with historical and cultural meaning. We don't claim to diagnose, treat, or cure anything.
- We don't use customer data to train AI models. Your listening history, preferences, and personal information are used to personalize your experience — not to feed model training pipelines.
How we think about the trade-off
AI lets a small team produce work that would have required millions of dollars of investment and a 30-person studio only 1 or 2 years ago. That's the upside, and we use it without apology. The downside is that the same tools let anyone produce volume without standards.
Our answer is the same as it's always been: taste, attention, and refusal to ship work that doesn't move us. AI is the brush. The painting is still on us.
Will this change?
AI tooling changes monthly. We'll keep this page updated as our pipeline evolves — adding tools we adopt, removing ones we drop, and clarifying anything that's changed. This page was last updated May 2026.
If you have questions about anything on this page — or want to know more about a specific part of the process — write to us at hello@harmonic639.com.
