You’d have thought the rich seam of forgotten masterpieces of British orchestral music would show signs of running dry, yet hardly a month goes by without some musical prospector turning up a nugget or two. While some finds are hardly essential, clarinettist Robert Plane has managed to unearth three real gems by composers many listeners have probably never even heard of, each with a different – and convincing – explanation as to why they are barely known.

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The most purely exciting work here comes from Glasgow-born Iain Hamilton (1922-2000). Thanks to its parts being mislaid, his Royal Philharmonic Society Award-winning concerto hasn’t been heard in 50 years. A student of Alwyn, Hamilton also absorbed influences from Bartók and Stravinsky lending this substantial half-hour work an appealingly convincing blend of surging...