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About

Bringing IRCAM-class tools to the browser

  • Algorithmic

  • Spectral

  • Serial

  • Stochastic

  • Microtonal

  • Complexity

  • Node Graph

  • Rhythms

  • Notation

  • Analysis

  • Export

  • Browser-based

grafer is a computer-assisted composition tool that brings IRCAM-class compositional techniques into a modern, browser-based environment. Built for contemporary music composers, researchers, students, and ensembles who need professional-grade algorithmic tools — from pre-compositional sketchpads, counterpoint, and microtonal scales through engraving and into rehearsal, where conductor mode walks the score live and performers see their parts on tablets — without complex local installations.

Compose

Analyze

Transform

Export

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Composition nodes across 17 categories for building complex musical structures

Explore Features

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Node categories from pitch & rhythm to spectral, stochastic, chaos & live OSC

Open App

Open & Accessible

No installation, no plugins. grafer runs entirely in your browser, making professional composition tools accessible to anyone with an internet connection.

  • Browser

  • Cross-platform

  • Instant

Musically Rigorous

Every algorithm is grounded in established compositional theory. From Boulez's pitch multiplication to Xenakis's stochastic processes, grafer implements techniques with mathematical precision.

  • Theory-driven

  • Precise

  • Research-grade

Visually Intuitive

The node graph paradigm lets you see your compositional process as a connected flow of transformations. Inspired by visual programming environments like Max/MSP and OpenMusic.

  • Node graph

  • Visual

  • Real-time

grafer Ready to compose with algorithms?

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