Although Enescu gave opus numbers to only 33 of his works, he left an enormous number of pieces in varying stages of composition, from sketches and draft outlines to isolated movements and some scores that are almost complete. Working with a handful of composers and musicologists - fellow Romanians with specialist knowledge of Enescu's style - the violinist Sherban Lupu has produced performing editions of a number of previously unknown works, heard here in the context of other Enescu rarities. One of these 'rescued' pieces, hiding behind the modest title of Caprice roumain, is nothing less than a major violin concerto.