Composing now

This isYour Cityat —

Free toexperience
City Data
Syncing
Traffic
Moderate flow
Weather
24°C, clear
Crowd
Dense · 11pm
MoodNocturnal · Restless
The composition

How a city becomes
music.

01
Every second, a thousand signals.

The city breathes.

Traffic sensors, weather APIs, crowd density maps, and the quiet hum of a city at rest — Pulse reads all of it in real time.

02
Traffic density → tempo.

Data becomes tone.

A gridlocked Friday evening becomes a dense, layered drone. A quiet 3am becomes sparse piano notes, each one breathing.

03
Rain → reverb.

Weather shapes texture.

Humidity lifts the reverb tail. A storm front shifts the key to minor. Clear skies open the high frequencies.

04
Dawn. Dusk. Midnight.

Time writes the melody.

The piece you hear at 7am is unrecognizable from the one at 11pm. Your city has a different voice for every hour.

The instruments

Four live streams.
One composition.

12k+
Road sensors

Traffic Flow

Movement → Tempo

Congestion maps from 12,000+ road sensors translate directly into rhythmic density. A gridlock becomes a dense, layered beat.

98%
Accuracy

Weather

Humidity → Reverb

3M+
Data points / hr

Crowd Density

People → Texture

24
Unique movements

Time of Day

Hour → Melody

The piece you hear at 7am is unrecognizable from the one at midnight. Every hour writes a new movement.

City portraits

Every city.
Every hour. Different.

The same street sounds completely different at dawn than it does at midnight. Pulse captures that.

Tokyo city skyline at dawn with golden light reflecting on buildings and streets
7:22am
Live

Tokyo

Japan

Kinetic
Rush hour ascending
Tempo128 bpm
KeyD Major
Mumbai aerial view at night with orange street lights and coastal city lights reflecting on water
11:47pm
Live

Mumbai

India

Nocturnal
City half-asleep
Tempo62 bpm
KeyA Minor
São Paulo cityscape at night with dense urban lights and skyscrapers stretching to the horizon
3:15am
Live

São Paulo

Brazil

Sparse
The city exhales
Tempo44 bpm
KeyF# Minor
London early morning with misty Thames river, Tower Bridge illuminated, and city lights fading into dawn
5:40am
Live

London

UK

Liminal
Between dark and dawn
Tempo72 bpm
KeyG Dorian
Your moment

Your ordinary world
is secretly
extraordinary.

Every city has a song. Yours is playing right now.

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