Brahms - Otto Klemperer & Géza Anda, KolnerRundfunkSO (live 1954) - Piano concerto op. 83
The piece is scored for 2 flutes, 2 oboes, 2 clarinets (B-flat), 2 bassoons, 4 horns (initially 2 in B-flat bass, 2 in F), 2 trumpets (B-flat), timpani (B-flat and F), and strings. (The trumpets and timpani are used only in the first two movements, which is unusual.)
The piece is in four movements, rather than the three typical of concertos in the Classical and Romantic periods: Allegro non troppo (B-flat major) Allegro appassionato (D minor) Andante (B-flat major/F-sharp major) Allegretto grazioso (B-flat major)
The additional movement results in a concerto considerably lengthier than most other concertos written up to that time. Upon its completion, Brahms sent its score to his friend, the surgeon and violinist Theodore Billroth to whom Brahms had dedicated his first two string quartets, describing the work as "some little piano pieces." Brahms even described the stormy scherzo as a "little wisp of a scherzo.
