Multiplayer Piano

Multiplayer Piano is an online, full 88-key piano you can play alone or with others in real-time. Plug up your MIDI keyboard, MIDI in and out are supported. You should be able to hear some seriously talented piano players performing here! Join in or just chat and listen.

For good performance, Chrome is highly recommended. Firefox also supports the requisite Web Audio API, but performance may not be as good. Chrome has Web MIDI.

Of course, first you need to Enable Javascript or it won't do anything...!

Fun & Hacks Piano tricks · chat spam

Piano — classic

Piano — spam / nuke

Piano — random / fun

Piano — nuke (fun)

Piano — modes

Piano — memes

Piano — cursed

Piano — long memes (20–45s)

Chat spam

ms burst idle

Dummy messages — tap to load

All Rooms

Public rooms load from the server. Private rooms are discovered from rooms you have visited or looked up by name.

Loading rooms…

Visible (open to everyone)

Drop crown

Visible (open to everyone)

Enable Chat

Only Owner can Play

Background color:

Room theme Tap one and everyone in the room sees it. Every theme reacts to the cursors in the room — move and click to play. Pick Classic to use the background color.

Your name & color

Pick any color — everyone in the room sees it

#3B82F6 Your Name

Sheet / MIDI — load music

MIDI file:

Upload a .mid file or use text notation below. Controls appear at the bottom while playing.

Text notation (one note per line):

Play MP3 — listen along

Audio file:

Pick an MP3 (or other audio). It uploads to the room so every device plays it together — play, pause, skip, and speed stay locked. Sound only, not on the piano keys.

Cursor & Follower

Pick a cat cursor or upload your own image, plus a love emoji trail. Everyone in the room sees your look.

Cursor

Your image

Size

18px

Follower

Metronome Stopped

120 BPM

Tempo BPM

Time Subdiv Sound Count-in Accent beat 1

Volume 70%

Room sync: crown starts/stops for everyone. Volume is personal. Shift+M toggle (crown) or view panel (others).

Image URL

Upload from PC