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How it works · the science

From sound to self-insight.

SoundTrack measures personality the way you can’t fake it, through instinctive reactions to sound, before the self-editing mind gets involved. Those reactions become your Acoustic Genome, then map to the Big Five, the established standard in personality science.

Why sound, not a questionnaire

The most honest answer is the one you don’t plan.

Every self-report test shares one weakness: you answer it. SoundTrack removes that bottleneck by reading a response you don’t author.

01

Self-report can be gamed

On a questionnaire you can choose the version of yourself you’d like to project. A reaction to sound happens before you can.

02

Instinct, not image

What you flinch at, lean into, and return to is recorded before any goals or personality questions are asked.

03

Grounded in the Big Five

Every result maps to OCEAN, with decades of peer-reviewed validation behind it, not a novelty type system.

Watch a reaction become a trait

Your instinct answers before you do.

A half-second reaction to a sound can’t be curated, and it’s remarkably consistent from person to person. We capture its shape, isolate the features driving it, and translate that into Big Five signal.

A.A short sound clip plays — sometimes familiar, sometimes not.
B.Your response is captured in the first moments, the part you don’t control.
C.The driving features are isolated and translated into trait signal.
Live signal · sample 03
recording
↑ flinch · 0.42s
Sound features
High dissonance
Rising arousal
Sparse rhythm
→
Trait reading
Openness+high
Neuroticism+mod
The building blocks

Every example is composed from the elements that shape how sound lands in the body.

SoundTrack treats sound as a controlled signal, listening across many dimensions, never relying on a single preference or genre label.

01

Frequency

Low to high spectral energy and brightness.

02

Pitch contour

Rising, falling, stable, unstable melodic motion.

03

Tone & timbre

Warm, bright, distorted, or bass-heavy color.

04

Tempo

Slow, fast, urgent, spacious, or body-driven.

05

Rhythm

Straight, syncopated, sparse, dense, unstable.

06

Valence

Bright, dark, nostalgic, tense, or melancholic.

07

Arousal

Calm to intense nervous-system activation.

08

Complexity

Simple, familiar, layered, or unpredictable.

Genome to type

The measurement is precise. The translation is human.

The Acoustic Genome is the measurement layer. Your SoundTrack Type is the plain-language headline, a memorable read of your dominant patterns, growth edge, and the environments where you thrive. Each Big Five trait owns a color; your percentile sets its depth.

O
Openness
C
Conscientiousness
E
Extraversion
A
Agreeableness
N
Neuroticism

The Explorer

The Architect

The Amplifier

The Connector

The Deep Diver

The Dreamer

The Maverick

Research foundation

Grounded in music psychology, not adapted from a quiz.

Our work draws on decades of peer-reviewed research into music perception, emotion, and personality, including the contributions of David Greenberg and Jason Rentfrow at the University of Cambridge.

Research lineage
& advisory input
Journal of Personality & Social Psychology · 2022

People use music to express personality across 50 countries

PNAS · 2021

Musical preferences predict personality at scale

American Psychologist · 2021

How music-making engages the social brain

Representative literature. Citations to be finalized before launch.
Coming soon

Turn a reaction to sound into a roadmap for growth.

Join the waitlist for early access and a first look at the SoundTrack experience.

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