Can it happen? That one comes away from a concert with the sense that all of the truth, the shape, the beauty and the urgency of some great works from the classical repertoire has been conveyed as well as is humanly possible? That the programme itself has been a completely satisfying and thought-out whole and has held the attention throughout? Yes, it really can.

The BBC Philharmonic and its chief guest conductor John Storgårds introduced their Manchester audience to two new things – possibly three – in this concert. One was a world premiere, and you can’t get much newer than that. The other big item was a symphony that’s already nearly 40 years old, yet having only its third performance in Britain.

It seems an almost indecent luxury to have heard two top mezzos in just over a week with so much to express, backed up by the perfect technique and instrument with which to do so. Georgian Anita Rachvelishvili with Pappano and the Royal Opera Orchestra the Friday before last only had to hold the spell through a Rachmaninov sequence in the middle of an all-Russian concert.

Schumann revitalized by John Eliot Gardiner and the London Symphony Orchestra last year left us wanting more: namely two of the four symphonies (transcendently great, as it turns out from these revelatory performances). But those concerts also guaranteed that the ones a year later would be the most vital tonic imaginable for grey, damp early February.

"The opportunities in standard concert formats are fewer than they were. You have to be versatile and look at different ways to bring this rich canvas of music to your audience," says pianist Lucy Parham.

You get a lot of notes for your money in a two-piano recital - especially when seven pianists share the honours for two and a half hours' worth of playing time. Well, they did call it a marathon, crowning the London Piano Festival so shiningly planned by Katya Apekisheva and Charles Owen, and the baton passed seamlessly from two pairs of hands to the next.

If only Liszt had started at the end of his Byron-inspired opera Sardanapalo. The mass immolation of Assyrian concubines might have been something to compare with the end of Wagner's Götterdämmerung. Instead he only sketched out the first act, complete until nearly the end, and the inevitable comparisons with the Wagner of the late 1840s are not unfavourable by any means.

Light-filled Cadogan Hall is hosting the most fascinatingly programmed concerts in a Proms season not otherwise conspicuous for its adventurousness. There's also an honourable pledge to premiere at least one new work by a female composer in each event, honouring the centenary of votes for women.

There is a tide in the best-planned festivals that comes in and out almost imperceptibly, bringing with it changes as the days move on. Put it down to the kind of perfect planning that discards any one rigid theme, and to forging long-term links with performers who don't just pop in for one concert.

When you have 21 women to present in song, but only a couple among the 14 poets and none to represent them out of the 15 composers idolising or giving them a voice, you need two strong defenders of their sex at the helm. Lucy Crowe and Anna Tilbrook are no shrinking violets – the soprano no longer a light lyric, the pianist supportive only in the best sense, full of flexible power and forceful middle-to-lower-range sonorities for the voice to coast above.