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J. F. Sebastian is a creative application that provides new ways to control and explore the sonic possibilities of the CS80-inspired Deckard’s Dream synthesizer by Black Corporation. J.F. Sebastian is a free and open-source.

Named after a former genetic designer of the Tyrell Corporation, the tool J.F. Sebastian is a creative application that provides new ways to control and explore the sonic possibilities of the Deckard’s Dream synthesizer.

Timbre Space

J.F. Sebastian uses machine learning to analyze Deckard’s Dream bank files and to construct a colorful Timbre Space that you can use to create new presets. Instead of moving sliders, just click anywhere in the Timbre Space and experiment how the sound changes.

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Timbre Space

Master the sliders

Automate Deckard’s Dream parameters, modulate them (need more LFOs?), save and load banks, patch and voice files, copy and swap between channels, randomize sliders.

DDRM control panel


CS80-like Tone Selector

Want to sound like old CS80 classics? Thanks to the work by Paul Shilling, J.F. Sebastian includes a clone of the original presetting system found in the CS80.

Tone Selector

Supported Platforms

J.F. Sebastian can run as an audio plugin (VST3, AU), or as a stand-alone application. For macOS and Windows


Please check out J.F. Sebastian’s website for more information.

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