You really have to hear this CD of Brahms Three Violin Sonatas. Krysia Osostowicz's violin playing is wonderful and Susan Tomes piano playing is remarkable, there are times when she makes the piano sound like pizzicato strings, I'm not fooling its amazing. These two musicians are first rate.

No, not another Mozart piano concerto disc! No indeed, for this pioneering recording gives us intimate, almost domestic versions of three of the composer’s masterpieces, versions that have scarcely been played, let alone set to disc, in the modern concert era. Moreover they give us the opportunity to hear Susan Tomes show her mettle in strong light as concerto soloist—and bring to a wider repertoire the distinct communicative magic that has made her one of the foremost chamber pianists of today.

Weber’s chamber music – just these three pieces if you don’t count the duos – clearly shows him on the cusp between Classical and Romantic. The Quartet for piano and strings, written in his early twenties between 1807 and 1809, begins with a Haydnesque gracefulness and politeness which is gradually invaded by more unruly harmonies and textures; the dramatic slow movement looks ahead to Schumann, while the closing fugue of the finale dresses 18th-century procedures in 19th-century colours. Then there’s the element of virtuosity which is a hallmark of the early Romantic era, in the showy piano part of the Quartet, which Weber wrote for himself, the concerto-like clarinet part in the Quintet with strings, designed for the pioneering Heinrich Baermann, and all three parts of the tuneful Trio for flute, cello and piano. The talented members of the pan-European Gaudier Ensemble are perfectly equipped to convey these different aspects of Weber’s musical personality, with the fleet-fingered pianist Susan Tomes leading the way in the Quartet and Trio, and Richard Hosford in the Clarinet Quintet recalling contemporary descriptions of Baermann’s own effortless brilliance.

Since none of Mendelssohn's cello and piano works were currently available on CD, this disc would have been welcome enough even without the tenderly nostalgic little unpublished Assai tranguillo (written by the 26-year-old Mendelssohn for his good young friend, Julius Rietz) recorded here for the very first time. Lasting only just over two minutes it ends inconclusively on the dominant, as if intended to preface something bigger.

Listening to the music on this two-disc set, you may wonder why the chamber works of Swedish Romantic composer Franz Berwald are not more frequently recorded. It can't be because of his themes, which are strong, sweet, and distinctive; or because of his harmonies, which are powerful, rich, and cogent; or because of his forms, which are innovative, inventive, and indestructible. The only possible reason for this music's neglect is that there's only so much room in the world for great music, and unfortunately, Berwald, Schubert, Schumann, Mendelssohn, Brahms, and Dvorák have apparently already occupied all the space allocated to chamber music of the Romantic period. Still, anyone listening to the music on this two-disc set will have to wonder if there's not enough room for Berwald, too.