Listen to Concerto in F: I. Allegro online. Concerto in F: I. Allegro is an English language song and is sung by Slovak Philharmonic Orchestra, Paul Brazda and Josef Jellinek. Concerto in F: I. Allegro, from the album George Gershwin: Rhapsody in Blue, was released in the year 2015. The duration of the song is 14:11. Download English songs online from JioSaavn.