I've noted that you refer to Edward Gregson as an composer from the USA - but he is from Britain. Are you sure about the info regarding this concerto's date and the composer? On Edward Gregson's website there is no motioning of a piano concerto composed in 1966 - the only concerto for piano and band is mentioned is the concerto entitled 'hommages' written in the 1990's.
Quelle pièce riche et merveilleuse, merci beaucoup pour cette découverte !
I've noted that you refer to Edward Gregson as an composer from the USA - but he is from Britain. Are you sure about the info regarding this concerto's date and the composer? On Edward Gregson's website there is no motioning of a piano concerto composed in 1966 - the only concerto for piano and band is mentioned is the concerto entitled 'hommages' written in the 1990's.
There is clear borrowing from Rachmaninoff in this piece!