BRO, Usa already has oneG E R S H W I N
Ew no.unless you're talking about his rhapsody in blue. It's overplayed but it's still good.
I'd vote for this rendition of 'stars and stripes' for the US. Though it is not a concerto, at the 2:30 mark, Horowitz grows another arm… (Done with fitting panache and bombast.. His rendition is in honor of him becoming a citizen of said country..)Or- more seriously…John Corigliano - piano concerto.