No fewer than four composers vie for attention in Volume 78 of the Hyperion label’s ongoing series devoted to the Romantic Piano Concerto. There’s only one official piano concerto here, but it’s a remarkable work from a composer in her mid-teens – Clara Schumann. Howard Shelley also presents single-movement rarities from three other great pianist/composers of the 19th century – Ferdinand Hiller, Henri Herz, and Friedrich Kalkbrenner.