Every track's tempo and key, locked
BpmAndKey reads the numbers that make music work together. Upload once and get accurate BPM, key, and beat-grid data — for one track or an entire library.
Step 1
Upload a track
Bring a song you own, created, licensed, or have rights to process — including real-world and lossy audio, not just clean demo files.
- Works with messy, real-world audio
- One upload, one shared library
- Your source stays in your account
Step 2
AFCUT analyzes it
The audio intelligence layer turns raw audio into timing, structure, and stems.
- Beat grid and timing markers
- Stem-aware separation
- Workflow-ready structure
Step 3
Analyze with BpmAndKey
Get precise tempo and key readings from the analyzed track — including tempo drift, half/double-time calls, and mode-aware key detection.
- BPM with drift and feel awareness
- Mode-aware key detection
- Beat grid you can trust
Step 4
Put the numbers to work
Sort, match, and mix with confidence — harmonic-mixing keys, tempo-compatible groupings, and grids that line up in any DAW or DJ software.
- Harmonic-mixing key notation
- Tempo-compatible track groupings
- Data that travels with your files
Step 5
Organize your library
Keep tempo, key, and grid data in one place for every track you've analyzed — a library that gets more useful with every upload.
- One library, every workflow
- Find and reuse past work
- Export when you're ready
Questions about the workflow
A few quick answers about the BpmAndKey workflow. See the full FAQ for more.
BpmAndKey analyzes tracks for accurate tempo, key, and beat-grid data — including drift and mode awareness — powered by AFCUT, the shared audio intelligence layer.
From one track, BpmAndKey produces a precise BPM reading, a mode-aware key call, and a usable beat grid. Analyze a library and the data powers sorting, matching, and mixing everywhere you work.
Yes. BpmAndKey is built for the music people actually work with — including degraded MP3s, live-feel material, dense arrangements, and AI-generated audio — not just clean demo files. The goal is output that is usable in a real workflow.
Freeware taggers guess once and hope. BpmAndKey reads tempo drift, half/double-time traps, and modal keys from the actual audio, then keeps the data organized in a library instead of buried in file tags.
Start with BpmAndKey
Join early access and be first to lock tempo and key across your library.
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No credit card required
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Early access to the suite