AAS Multiphonics CV-3 patch.
Harpsichord? Sounds more like a Hammer Dulcimer to me :-). Just couldn’t be bothered renaming it!
Velocity sensitive.
3-op FM into Objec Filter and ADSR/VCA with comb filter.
The comb filter is modulated by the ADSR and an LFO.
Finally some stereo delay and reverb.