Imagine if Liszt had applied the continuous thematic transformation techniques of his First Concerto to themes excavated from Borodin's figurative trunk, and you'll get the idea of how Blumenfeld's 14-minute Allegro de concert goes about its business. The music may be derivative, but the florid and idiomatic keyboard writing is grist for any aspiring virtuoso's mill.

It's harder to get a handle on the somewhat diffuse, square-ish style of Nápravník's Concerto Symphonique. Some of the first movement's slashing accents and motoric rhythms foreshadow Prokofiev, while its lyrical moments and the Larghetto's main theme evoke a more Brahmsian aura. The third movement features two extroverted Russian dance themes, contrasted with a slower, more poetic third theme that's usually set off by a painfully obvious single note. Interestingly, Nápravník effects more adroit transitions in the relatively discursive and rhapsodic Fantasie russe.

Evgeny Soifertis' effervescent, colorful virtuosity never fails to delight, and if the BBC Scottish Symphony's brass seem a little rough around the edges in comparison to their beefier selves on other recordings, they generally respond well to Alexander Titov's vivacious leadership. Collectors who've followed this series from the start need not hesitate.