About Melrose
Melrose is an MCP server published by emicklei in the Developer Tools category: interactive programming of melodies, producing MIDI.
The repository has 214 stars and 18 forks, with the last commit 3 days ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
git clone https://github.com/emicklei/melroseThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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Releases
README
Melrōse - programming of music melodies
Introduction
melrōse is a tool to create and play music by programming melodies.
It uses a custom language to compose notes and create loops and tracks to play.
Write note patterns as short text expressions, then play them through a MIDI device or music app.
MIDI (Musical Instrument Digital Interface) is a digital communication language that sends musical instructions—like which note to play, how long to hold it, and how hard it is struck—between electronic instruments and computers.
This is an example of a simple major scale C.
sequence('c d e f g a b c5') // or use the alias "seq"
Note sequences in your program can be changed while playing giving you direct audible feedback.
See also Blog post
Read the documentation on how to use melrōse.
Choose your setup
- Try it in your browser: Open the Melrōse Playground, enter the scale example above, connect a MIDI receiver such as GarageBand, and use the play control.
- Work locally with music files and MIDI devices: Install Melrōse to use its terminal REPL and connect to MIDI devices. A local installation can connect to multiple devices, with up to 16 MIDI channels available per device.
- Compose in Visual Studio Code: Install the Melrōse VS Code extension to manage music files and play music from the editor.
Showcase
MIDI setup
Contributions
Fixes, suggestions, documentation improvements are all welcome. Fork this project and submit small Pull requests. Discuss larger ones in the Issues list. You can also sponsor Melrōse via Github Sponsors.
Related tools
melrose-mcpis a (server) tool that uses the MCP protocol to receive expressions to play. See melrose-mcp for details how to install and use it.midicylesis a tool that visualizes MIDI events using polar coordinates (notes move around in circles).See midicyles for details how to install and use it.keymidiis a tool that provides an interactive OS Keyboard to send MIDI events. This can be used to control the playing of music inmelrōse.See keymidi for details how to install and use it.slidermidiis a tool that provides an interactive UI Sliders to send MIDI change event. This can be used to control the playing of music inmelrōse.See slidermidi for details how to install and use it.
Software is licensed under MIT.
© 2026 ernestmicklei.com
README fetched from the repository 9 hours ago. The original is authoritative.