Kenneth Reitz 4/1/2026

Free OP-XY Presets, Made from Python

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This article describes how the author used Python and their PyTheory library to generate 69 multisampled instruments and 12 drum kits for the OP-XY (and OP-1) hardware synthesizer. The presets are entirely synthesized from code, with no recorded samples, covering piano, strings, brass, woodwinds, guitars, synths, and world instruments. The article also discusses the OP-XY's preset ecosystem, sample memory limits, and the technical pipeline using two Python scripts. It is a technical tutorial/guide blending music technology, Python programming, and hardware synthesis.

Free OP-XY Presets, Made from Python

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