Chick Corea at the Mark Allen Concert Grand.

Excerpt from the back cover of Chick Corea's Delphi 1 Album PD-1-6208 1979

"The piano I'm playing on these volumes is a unique instrument. It is a prototype concert grand built singlehandedly by Mark Allen. Mark Allen, with this instrument, has established a new level of excellence and quality in the making of a grand piano. The piano far surpasses any other I've played - it responded with ease to every way I touched it. What a Pleasure!"

"Special Thanks to: Mark Allen for building such an incredible piano."