For the acoustic signals we employed a stereo pair of Bruel and Kjaer mics, a Neumann U67 in the mono position and per-key recordings with a contact mic attached directly to the tine. For each note 8 velocities and up to 5 round-robins were recorded per-source, along with 5 round-robins for both the sustain and release samples. This was done 3 times for the electric sources, once for each of the 3 included voicings (where the tack position is shifted on the hammer, resulting in changes of color from deep to thin). Additional recordings were made to capture the pedal-up and pedal-down sounds, this was done for the mono, stereo, contact and DI signals with 7 round-robins for each. The result of this process was a working base of over 47,000 samples, a truly massive library that beautifully captured even the most subtle nuances of the piano.