It is very familiar-sounding Brahms: A long-lost sketch of a piano piece by the great composer, perhaps a study for the “Trio” section of his Op. 40 Horn Trio.
Hear Andras Schiff play snippets and discuss the piece with the BBC’s Tom Service and conductor Christopher Hogwood:
http://www.bbc.co.uk/emp/external/player.swf
The full piece was part of an Andras Schiff recital presented on BBC Radio 3’s Music Matters, captured on this YouTube clip:
Plus, you can download the sheet music for free at PianoStreet.com.
NOTE:
In the “comments” section below, an antiquarian disputes Hogwood’s “discovery” story, with just cause. The extra information adds a bit of historical background, which made me smile with the remote Toronto connection: Violinist and Brahms mentor Edouard Remenyi’s direct descendants own Remenyi House of Music across from the ROM on Bloor St. W.
John Terauds