STARLIGHT RECORDS

Audio analysis

READY

Drop an audio file or browse

WAV, MP3, FLAC, M4A & more

Up to 100 MB / 10 minutes

KEY

—

Waiting for audio

BPM

—

Waiting for audio

LENGTH

—

Minutes : seconds

Key and tempo estimates appear here after analysis.

Stem separation

Four stereo WAV stems.
Model download: ~172 MB on first use.

Vocals 01

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Drums 02

—

Bass 03

—

Other 04

—

Processed locally. Desktop Chrome or Edge recommended.

Pitch calculator

Sample key

Target key

Shortest shift

+3

semitones up

C♯ minor → E minor

Up

+3

Down

−9

Pitch shifting preserves the sample’s major or minor scale.

Desktop recommended

TOOLS works best on desktop. Stem separation can crash on mobile, especially in iPhone Safari. Use desktop Chrome or Edge for stems.

Source and licenses

TOOLS includes Essentia.js (AGPLv3) and demucs-web (MIT). You may redistribute and modify the app under AGPLv3 or later; it is provided without warranty.

Essentia.js sourceEssentia C++ source