Harmonic Keys for Arturia Pigments 3 is a free library of 40 keyboard patches created exclusively with additive synthesis (Harmonic engine of Pigments 3).
The first two macros are assigned to filter’s cutoff and resonance, the third is assigned to Aux reverb and finally with the 4th Macro you could create some interesting variations while sculpting the sound through the spectrum. For most patches the sculpting is very subtle.
