Four players. Four instruments. One song. Play guitar, piano, violin, or drums in perfect sync — or let AI compose your next melody.
10 fret positions across two octaves — E2 to D4. Tap 1–10 to play each string.
8 white keys + 5 black keys rendered with real weighted touch. From C4 to C5.
Four bowed strings — G, D, A, E — with lush sawtooth synthesis that sings.
Kick, snare, hi-hat, tom, crash, and ride. Build the beat that holds the band together.
One player creates a room and gets a 4-letter code. Share it with your band — no accounts, no installs.
Each player chooses their instrument. The host picks a song — classic, Bollywood, or AI-generated.
Glowing keys guide each player's turn. The song passes between instruments in real time.
Describe any mood, style, or melody idea. The AI composes a full note sequence in seconds — tuned to your instrument and playable instantly in Chorus.
No sign-ups. No apps. Just share a 4-letter code and your band is live — synced in real time across any device.
Tap "Open App" and hit Create Room. You'll get a unique 4-letter room code instantly — no account, no sign-up needed. Share this code with your friends.
Friends open the app, enter the code, and pick their instrument — guitar, piano, violin, or drums. The host then selects a song from the built-in library or uses the AI Composer to create one.
The host taps Start. Glowing keys show each player when it's their turn. Hit the right key at the right time — the song progresses note by note across all devices.
Don't have friends nearby? Tap "or play solo" in the lobby. Switch between all four instruments and follow along with the built-in song library. Glowing keys guide you through each note.
Tap the purple sparkle button (✦) in the bottom right. Describe any mood — "festive Bollywood guitar" or "dramatic violin solo" — and the AI generates a playable note sequence in seconds.
Chorus runs entirely in the browser — no installs needed. Works on phones, tablets, and desktops. For best results on phones, use landscape orientation while playing.
Built-in songs include Twinkle Twinkle, Happy Birthday, Ode to Joy, Mahabharat Title, Raghupati Raghav, Jai Ho, Tum Hi Ho, and more. Each song has parts arranged for every instrument.
On desktop, use keyboard keys to play: Guitar uses keys 1–9 and 0 (for key 10), Violin uses A–D, Drums use A–H. This makes solo practice much faster.
When all notes in a song are played correctly, a celebration animation fires across everyone's screens simultaneously. The band wins together — or starts over with a new song.
Create a room or join one with a code. Each player picks an instrument and plays their part in the song.