Retune any song to 432 Hz or the Solfeggio frequencies — in real time, on every device.
HZP is an ad-free music player built around one idea: your music should play at your frequency. Shift any track from the 440 Hz concert‑pitch standard to 432 Hz or any Solfeggio frequency instantly — lossless, real‑time, no converting files by hand. Bring your own library, stream millions of tracks, and watch it all come alive with a built‑in visualizer.
▶ Try the web player · ⬇ Download for macOS & Windows
- 🎚️ Real‑time retuning — Play any song at 432 Hz or the full Solfeggio set (174–963 Hz), and return to the 440 Hz standard any time. The pitch shifts live as you listen — nothing to pre‑convert, nothing to wait for.
- 📁 Your local library — Point HZP at your music folders and it builds a clean, VLC‑style catalog: browse by song, album, or artist, sort any column, and right‑click to queue, add to a playlist, or reveal in Finder. MP3, FLAC, M4A, WAV, and more — artwork and all.
- 🌐 Streaming built in — Connect Apple Music to play your subscription, or stream 1,000,000+ tracks from Audius. Retuning works across everything you play.
- ✨ SYQEL visualizer — Real‑time, audio‑reactive visuals powered by SYQEL, right inside the player.
- 📚 Playlists & tools — Playlists, favorites, a full listening history, and stats on what you play and the frequencies you reach for.
- 💻 Everywhere — Native apps for macOS (Apple Silicon + Intel) and Windows, plus web, iOS, and Android — your library and playlists follow your account.
- 🚫 Ad‑free.
HZP plays your music at any of these tunings — pick the one you like and press play:
174 · 285 · 396 · 417 · 432 · 528 · 639 · 741 · 852 · 963 Hz — plus 440 Hz (concert standard).
432 Hz and the Solfeggio frequencies are alternative tunings with a long musical and cultural history; HZP simply makes it effortless to hear any song in them.
| Platform | |
|---|---|
| macOS & Windows | Latest release |
| Web player | music.hzp.co |
| iOS | App Store |
| Android | Google Play |
Plans: a free tier to get started, plus Core, Re:tune, and Amplify for unlimited retuning and the full experience.
HZP is made by SYQEL — the music‑visualizer company. The desktop apps are built with Tauri; the visualizer is the SYQEL engine embedded in‑app.