Highly sexed cockerels and cats, a lovesick lion and a ballet of frogs might not seem like a recipe, or rather a menagerie, for profundity. Yet in two ravishing French man (or child)-meets-beast fables for the stage, Poulenc and Ravel are quite capable of tearing at our heartstrings. That they did so unremittingly last night was very largely due to the supernaturally beautiful sounds master conjuror Stéphane Denève drew from the BBC Symphony Orchestra.

Frank Bridge: Orchestral Works BBC National Orchestra of Wales/Richard Hickox (Chandos)

Ravel composed only two operas, both one-acters, widely separated in time, superficially very different, but both in a way about the same thing: naughtiness. In L’Heure espagnole (1911), the clockmaker’s wife, Conceptión, entertains a succession of would-be lovers in her husband’s absence. In L’Enfant et les sortilèges (1924), the little boy who won’t do his homework, who smashes the teapot, pulls the cat’s tail and rips the wallpaper, suddenly finds his victims coming to life and scaring him to death.

One top student orchestra playing on its own can be exciting enough. Two playing together can produce a charge of dynamite that might not leave the building standing. That was so anyway in last night’s Prom, when players from New York City’s Juilliard School and London’s Royal Academy of Music, by now frequent collaborators, joined up to shake the earth with thunderous brass, swooning strings, diamond precision, a velvet bloom – every characteristic of a world-class orchestra except the honour of being conducted by Lorin Maazel.

The repertoire of the OAE is creeping away from the 18th century and into the 20th with such unashamed eagerness, it wouldn't be at all surprising to see them throwing up an urtext edition of "Hit Me Baby One More Time" in a few seasons. Last night, we got 20th-century French impressionism, including a work that was premiered in 1933. Some might call this expansion into the last century bold. Others greedy.

Dvořák: Symphony No 7, In Nature’s Realm, Scherzo capriccioso Bournemouth Symphony Orchestra/José Serebrier (Warner Classics)

Renée Fleming: Poèmes - Music by Ravel, Messiaen, Dutilleux (Decca)

There must be a protest movement going on in Birmingham’s ballet against London’s - if down south they insist on Kenneth MacMillan’s box-office blasters, so in the Midlands it’s Frederick Ashton’s more fragile work that reigns. BRB director David Bintley’s northern chip on the shoulder has its uses, and especially this spring. After his hugely entertaining Hobson’s Choice last week, here is a double bill of Antiques Roadshow Ashton that it's unlikely today's Royal Ballet (trying so consciously to be hip) would think of rediscovering.

Ravel: Complete Music for Violin and Piano Alina Ibragimova, Cédric Tiberghien (Hyperion)

The spectacle of an orchestra named after Mahler playing Stravinsky irresistibly calls to mind Stravinsky’s report of a performance of the Eighth Symphony in Zurich in 1913. “Imagine”, he wrote to Maurice Delage, “that for two hours you are made to understand that two times two makes four.” Oddly enough, repetition is the lifeblood of Stravinsky’s own music, though he rarely makes two times two equal four, and his symphonies don’t last two hours (nor, incidentally, do Mahler’s).