Moselle is a software synthesizer that uses the "modular synthesis" paradigm for making music.
The new twist is that rather than connecting modules together with graphical "patch cords," or editing some sort of schematic "diagram," you use mathematical formulas, similar to Excel spreadsheets. These can be as simple as "Waveform = Sawtooth" or "Input = Oscillator2:Output". But they can also be quite complex when you need complexity. (See the videos below, most of which show the entire patch you're listening to on the screen.) A formula of just a few lines might do what it'd take a screen-full of photo-realistic reproductions of hardware modules to do. The result is that complex patches are far easier to write the first time, and to study and tweak later.
We've copied this from the evolution of computer programming. In the 1940s computers used knobs, buttons and patch cords that would be the envy of any synthesist! However, by the 1950s, the bottleneck of computability wasn't the computer power or the programmers' creativity, but the means of programming. Moselle makes the same paradigm shift in synthesis today.
Moselle is currently a pre-production release Alpha 5. It is available for free download from our website. It is currently Windows-only though a Mac version is planned. It does not yet run as a plug-in. Instead, it is a stand-alone development environment. Just plug in a MIDI keyboard, turn up your computer speakers, and patch away.
Several dozen videos are available on YouTube, that mostly show how easy it is to get unusual effects that would be nearly impossible on most other synthesizers.