The Piano Concerto No. 8 in A-flat major, Op. 151 "Gruss an den Rhein" (French: "Salut au Rhein") (English: "Greetings to the Rhein"), by
Ferdinand Ries was composed around 1826 and published in 1829 by Simrock. While still showing the structural influence of
Beethoven's piano concertos, the writing for the piano is more akin to that of later composers such as
Chopin,
Mendelssohn &
Schumann.
Ries composed this work in 1826, some two years after his return from England and approximately two years after the publication of the last of his early piano concerti (Opp.
123 & 132). Allan Badley comments that this would most likely make it the seventh of Ries's eight piano concertos to be written. As he was no longer an active concert pianist publication by N. Simrock, bearing a dedication to
Godefroi Weber followed within a year.