← Back to the party

About

Monster Music

What is Monster Music

A random party in Count Dracula's castle. Every visit brings a new crowd of monsters, new dances and a new soundtrack — all made up live, right in your browser. Press play and let the night run.

Everything is random

  • Who dances, how they dance, what happens and when — all of it is made up on the spot, in your browser.
  • The music too: every track is composed while you listen. No recordings, no samples — every kick, clap and chord is synthesised in real time.
  • So every visit is a different party. You will never hear exactly the same night twice — unless you save it.

How to use it

Playing

  • Play / Pause — starts the music (and the party).
  • The music never stops: one finished track of 3–4 minutes follows the next, and like a DJ the site blends them — the next track's drums come in while the last one ends.
  • Open mixer (or M) shows all controls; CLOSE hides them again.
  • BPM − / + — the tempo.
  • Style — Deep house, Tech house or Minimal. RANDOM STYLE lets every new track choose its own.
  • NEW TRACK — everything new: style, tempo, sounds, patterns.
  • NEW VARIATION — a new track in the same style and tempo. Channels with the lock stay as they are.

Shaping the sound

  • Six channels: kick, clap, hats, bass, chords, lead — each with a switch, a volume fader and a level meter.
  • SOUND and PATTERN ‹ › — pick another instrument or rhythm for a channel; the dice picks both at random.
  • 16 STEP BEAT — the rhythm of the selected channel; press a step to switch it on or off.
  • EFFECTS — filter, delay (echo), reverb (room), swing.
  • EQ — low, mid and high.
  • ENERGY — how busy and loud the music is, and how many monsters dance.

Keeping a track

  • The timeline shows the parts of the track that is playing; press a part to jump there.
  • SAVE — download the track as a WAV file, or keep it in MY TRACKS in this browser.
  • COPY LINK — a link that rebuilds exactly this track for anyone who opens it.

In the hall

  • Ghost wail, Bats, Laser, Wind — each one with its own little scene.
  • Move the mouse quickly: it makes wind in the hall.
  • The neon signs over the doorways: ABOUT opens this page, BUY A ROUND is for buying the monsters a drink (the glass button next to About does the same).

Keys

Space
play / pause
M
open / close the mixer
H
hide the interface
F
full screen
1–4
sound effects
Esc
close a window or the mixer

Using the music

Music made here is free to use in your streams, videos, cafés and parties. A link to the site is appreciated but not required.

Made with Claude

Created with Claude — built on the Claude Opus 5.5 model by Anthropic.

Not affiliated with Anthropic.

Support the project

Monster Music is free. If it made your night better, you can buy the monsters a round.