In the late 70s Korg presented two instruments they called Allround-Keyboards: The Lambda ES50 and the Sigma KP30. The Lambda is the polyphonic basis instrument for Electric Piano, Clavinet and Organ, and the monophonic Sigma is for the Lead Synth parts.
This sample library provides their most typical sounds, some of them even in dual channel mode for great stereophonic experience.
Available right now in the NI Kontakt format. More details and Audio Track demo here