From now until 12 September, when Wigmore darling Iestyn Davies returns to open the new season, the biggest names in instrumental music are to be heard in the biggest venue, the Albert Hall. With all eyes and ears turned by maximum publicity towards the Proms, folk may have forgotten that the Wigmore Hall concerts were ongoing until last night.

One hardly expects operas about historical figures to bother much with the actual facts of their lives. But Handel’s Xerxes must nevertheless rank as an extreme case. Instead of bridging the Hellespont and invading Greece with a million men – a campaign mentioned in passing as if it were some minor business trip – Xerxes spends his time philandering with his brother’s intended and generally creating emotional mayhem in the Persian court. Jenny Miller’s production transplants the action, somewhat irrelevantly, to a nightclub in, perhaps, Cairo or Palm Springs.

If you’re looking for rare festival Handel, better a pasticcio – take that as shorthand for a cut-and-paste job mostly from previous hits – than one of those original operas in which the composer only goes through the motions (and I’ve heard a few). Call in a reasonably cutting-edge director, make sure you have a motivator of the calibre of Laurence Cummings in the pit – not difficult in this instance, since he’s the devoted force behind the London Handel Festival – and find the brightest and best of young singers.

What does it mean to be a great artist? Is it enough for your work to be admired, studied, emulated and quoted by contemporaries and subsequent generations, or is the value of art judged by a more complex set of criteria? By considering the extent of Rubens’ influence on artists from Rembrandt to Klimt, the Royal Academy is having a go at skinning a very old and troublesome cat: the elevation of Rubens from gifted confectioner to worthy Old Master.

The ebullient presenter, writer and director Waldemar Januszczak opens his enthusiastic and proselytising hour-long film on Sir Peter Paul Rubens (1577-1640) by reading out a series of disparaging quotes from other artists.

Were it not for William Christie and Les Arts Florissants, the vocal and instrumental ensemble he started in Paris in the 1970s, the beauties of the musical French Baroque might have remained a dusty fact of pre-Revolutionary history. As it is, there is barely a singer, player or conductor now performing Lully, Couperin, Rameau, Charpentier et al who has not benefited from the life’s work of this diligent conductor-musicologist. Through him, their arts are indeed flourishing.

I am picturing a scene in BBC4’s highly fortified underground headquarters, a conversation between its mastermind-in-chief and a hapless minion. “What do we do well, Stanley?” “History documentaries, boss.”  “And what do people, according to the immutable proofs furnished by viewing figures, actually like?” “Ballroom dancing programmes, boss. Costume dramas. And unashamedly populist, good-looking young historians.”  “Correct, Stanley. So waltz yourself over to the phone to get Len Goodman and Lucy Worsley to do us a three-part series on the history of ballroom dancing.

French soprano Sandrine Piau, born in 1965 in a south-western suburb of Paris, has an agile, supple voice. It soars, so critics reach readily for all those bird metaphors: nightingale, sparrow, "she leaves the earth on wings of song" and so on. She has worked regularly with more or less the entire pantheon of baroque and early music specialists: William Christie, René Jacobs, Philippe Herreweghe, Christophe Rousset, Emmanuelle Haïm, Sigiswald Kuijken, Gustav Leonhardt, Ivor Bolton, Ton Koopman, Marc Minkowski and Nikolaus Harnoncourt.

As a town of 70,000 or so people, Bamberg boxes dazzlingly above its weight in at least two spheres. The Bamberg Symphony Orchestra, risen to giddy heights under its chief conductor of the last 14 years Jonathan Nott, is decisively among Germany’s top five, and acknowledged as such in its substantial state funding (to the enviable tune of 80 percent, a figure known elsewhere, I believe, only in Norway). And a galaxy of great buildings has won the place UNESCO World Heritage status.