You may never have heard of Florence Foster Jenkins, although she has definitely earned a certain renown among music-lovers. For all the wrong reasons: the American soprano, who performed at private recitals in the early decades of the last century, before a climactic Carnegie Hall appearance a month before her death in 1944, was famous for the sheer awfulness of her voice.

“Murder is hilarious,” quips Zawe Ashton’s scheming maid, and in Jamie Lloyd’s high-octane, queasily comic revival of Jean Genet’s radical 1947 play, it really is. It’s also lurid, strange, bleak and powerfully transcendent, as befits a piece that locates hunger for creation and liberation in the imitation and destruction of another.

Given that Edmond Rostand’s 1897 tragicomic verse play Cyrano de Bergerac gave the word "panache" to the English language, it’s an irony that panache is the quality most woefully lacking in Russell Bolam’s production of Glyn Maxwell’s adaptation. It ought not to be so. With its all-female cast and stripped-down staging, it ought to feel radical and fresh, stimulating new lines of enquiry into the nature of role-play and what constitutes maleness and male heroism, shedding new light on a familiar text.

It was another Davis, the late Colin rather than the very alive Andrew, who used to be master of Berlioz's phenomenally inventive opera for orchestra with its novel explanatory prologue and epilogue. I like to think he'd have been looking down fascinated by last night's very different miracle of pace, clarity and ideal blend of instrumental and vocal song.

Questions of what is authentic and what is retro get more complicated the more the information economy matures. Music from decades past that only tens or hundreds of people heard at the time it was made becomes readily available, gets sampled by new musicians, and passes into the current vernacular. Modern musicians play archaic styles day in day out until it becomes so worn into their musculature that it reflects their natural way of being. Tiny snippets of time that were once meaningless become memes that are shared and snared into the post-post-modern digital tangle.

Walter Presents, Channel 4's clever and welcome strand of foreign, subtitled drama for broadcast both on television and online, is already throwing up some interesting titles. It launched with the Cold War-set Deutschland 83, and now second in the series to be given a broadcast run is Spin, first seen on French television in 2012 under the title Les hommes de l'ombre (The Shadow Men).

David Nice writes: it hardly seemed possible, but a pivotal figure in the 20th century music scene has died, two months short of his 91st birthday. As composer, Boulez now seems not so much a game-changer as a constant innovator in one of many strands among the possibilities of contemporary music. He even admitted in an Edinburgh Festival interview that he and his colleagues may have underestimated the role played by the audience in absorbing his avant-gardism.

By the end of the 1960s, Steve McQueen was at the top of the Hollywood heap. Star turns in The Great Escape, The Thomas Crown Affair and Bullitt had established him as the King of Cool, a self-contained anti-hero whose minimalist, watchful performances radiated a mysterious sex appeal.

Pro patria mori. Now there’s the test for Henry V - perform it on Remembrance Day. The “band of brothers” shtick relies on an idea of patriotism from an age when there was no need to define something so heartfelt, and an idea that kings and commoners were all in it together when fighting the enemy. After all, Henry orders the good English soldiers to rape French girls, smash the heads of French grandfathers, and skewer their babies on pikes, no questions asked. The bonuses of patriotism, if you like.

There's a current running through the underground club / electronic music of the 2010s that cares not a jot for progress – but neither is it retro as such. It's been called “outsider house”, which is a pretty lame name for stuff that is often extremely accessible and welcoming, and is certainly not just house music. Rather it's a kind of neo-psychedelia, a sound that plays tricks with memory and expectation, collapsing oppositions between sophistication and naiveté, between kitsch and sincerity, and between low and high fidelity in the pursuit of beautiful discombobulation.