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And Only Then

9/1/2026

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We have a new year, and it's time to make plans. Ooloi's architecture is now closed, and the work enters a new phase. What follows is a road map, not a schedule – no dates, no promises – but a logical progression.

These stages are different in nature from what has gone before. Conceptually simpler than the deep semantic work (what the music is, how it's represented and manipulated) or the infrastructure (server/client transports and roundtrips, monitoring, certificates). Everything below is comprehensively architectured and implementation-ready. The thinking is done; what remains is execution.

The Preparations

Event-Driven Client Architecture: The nervous system that lets the interface respond without freezing. (ADR-0022, ADR-0031)

Windowing System: Windows, menus, palettes, dialogs, notifications, connection status. The application becomes something you can see and touch. (ADR-0005, ADR-0038)

Multi-Mode Clients: Standalone operation, peer-to-peer connection, shared server connections. (ADR-0036)

Skija / GPU Rendering: The drawing substrate. GPU-accelerated graphics, paintlist caching, lazy fetching. The machinery for putting marks on screen. (ADR-0005, ADR-0038)

Hierarchical Rendering Pipeline: The transformation from musical structure to visual layout. (ADR-0028, ADR-0037)

Plugin System: First-class access from any JVM language. (ADR-0003, ADR-0028)

MusicXML: The first, limited version, implemented as a canonical plugin. Real scores entering the system. (ADR-0030)

And then – and only then – will the first staff line appear.
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    Author

    Peter Bengtson –
    Cloud architect, Clojure advocate, concert organist, opera composer. Craft over commodity. Still windsurfing through parentheses.

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Ooloi is a modern, open-source desktop music notation software designed to produce professional-quality engraved scores, with responsive performance even for the largest, most complex scores. 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.

​Ooloi is currently under development. No release date has been announced.​


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  • Home
  • Overview
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