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I Couldn't Wait Any Longer: Complete Ooloi Documentation Released

6/7/2025

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​I've been saying I'm itching to open source Ooloi, but waiting for the complete software felt increasingly artificial. The documentation tells the real story – twenty-five years of architectural evolution from Igor Engraver through AWS systems thinking to this closure in Clojure.

So here it is: the complete Ooloi documentation collection, released publicly ahead of the software itself.
What you'll find:
  • Comprehensive guides teaching advanced Clojure through musical problems
  • Complete architectural decision records showing our thinking
  • The timewalker guide (with three Rocky Horror references, naturally)
  • Real functional programming education through meaningful domain examples

This represents my attempt to walk the talk after critiquing FP drawbridge syndrome. These guides serve dual purpose: they document sophisticated music notation architecture whilst teaching functional programming concepts through examples that actually matter.

The timewalker guide alone demonstrates transducers, lazy sequences, and functional composition through orchestral score traversal. The polymorphic API guide teaches multimethods through musical type systems. The concurrency patterns show STM coordination through collaborative editing.

Twenty-five years of thinking, distilled into something that I hope proves useful beyond music software. The architecture is complete; the foundations are solid. Now you can see why I've been eager to share this work.

An organism evolved, indeed.
​
Explore the complete documentation: https://github.com/PeterBengtson/Ooloi-docs

​/Peter
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    Peter Bengtson –composer, organist, programmer, cloud architect. Currently windsurfing through parentheses.

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Ooloi is a modern, open-source music notation software designed to handle complex musical scores with ease. It is designed to be a flexible and powerful music notation software tool providing professional, high-quality results. The core functionality includes inputting music notation, formatting scores and their parts, and printing them. Additional features can be added as plugins, allowing for a modular and customizable user experience.​
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    • Technical Comparison
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  • Contact