Keyscape uses massive amounts of "Round Robin" samples and velocity layers that are nearly impossible to replicate perfectly by hand. Licensing:
Create an audio track in your DAW with the input set to the channel where Keyscape is loaded. Record your notes. Record every note chromatically (C, C#, D, D#...). Hold each note for about 10 seconds and let it ring into silence.
official Spectrasonics products but are meticulously sampled versions of Keyscape's core instruments (like the Yamaha C7) specifically for Kontakt.