The Lobgesang "lies very near my heart," wrote Mendelssohn. And the composer was so self-critical that the published order of his symphonies bears no resemblance to their composition: this "Hymn of Praise", known as the Second, was the penultimate before his symphonic masterpiece, the "Scottish". It is more often performed in recording studios, to satisfy recording companies’ hunger for complete cycles, than in concert, at least outside the composer’s native Germany.

In this autumn’s Vagabonds Collection, Viktor and Rolf showed a pink top covered in hundreds of buttons and framed with elaborate furls of pale pink and blue tulle; did they intend the model to look as if she was wearing a giant vulva across her chest? For me, this is the most vulgar garment (pictured below right) in an exhibition that supposedly explores the concept of vulgarity, yet is full of extremely tasteful designs.

Call it re-analogification, de-digitisation or perhaps just plain reverse-engineering, Icebreaker’s set at Milton Court was all about reclaiming the electronic for hoary-handed instrumentalists. Their skills are well-honed: from Anna Meredith to Steve Martland to Kraftwerk, with an inspired side-order of Scott Walker, they conjured propulsive rhythmic lines and saturated layers of harmony from inauspicious sources – pan-pipes, soprano sax, a single cello, bass drum.

Purcell’s The Fairy Queen is a riddle to which directors must find an answer. The problems posed by a work whose theatrical characters have no foothold in the musical interludes, whose text is an awkward composite of almost-Shakespeare and not-at-all-Shakespeare, whose unedited action can easily swell to a will-sapping four hours are not to be underestimated, but to address them by adding further narrative layers, further dramatic frames and meta-theatrical flummery is at best questionable and at worst wilful.

Four headliners, one bill – Sam Lee, Debashish Bhattacharya, Songhoy Blues and Mariza: it was an impressive line-up at the Barbican for a Monday as the world and folk music magazine Songlines hosts its annual awards bash. Now, these are readers’ awards, with nary an expert in sight when it comes to choosing the winners.

The confidence trick to end all tricks, Ben Jonson’s The Alchemist is so utterly recognisable, so clearly contemporary, that to update the setting feels a bit like underlining the point in red pen. In this transfer from Stratford's Swan Theatre director Polly Findlay plays things 17th-century straight, allowing her audience to make the connection with just a little help from an irreverent new epilogue.

What price a human soul? That’s the question Marlowe’s Doctor Faustus asks – a question whose answers are rooted in faith and theology. But in a society with little use for faith and still less for theology, how do you reframe the question? Director Maria Aberg offers a deft if not always entirely coherent answer in her breathless, punky take on the play for the RSC.

A neon sign over the Barbican’s Silk Street entrance reads Scandinavian Pain. Following its victory over us in Euro 16, it seems that Iceland is now drenching us with its special brand of melancholy. Things are not that simple, of course. In his work, Icelandic artist Ragnar Kjartansson indulges his penchant for sorrow with such bitter sweetness that, with many a gentle sigh, emotional pain morphs into something more akin to pleasure.

A couple of hours of certainty really were very welcome during referendum week, and Murray Perahia did indeed bring clarity, poise, and an unquestioned masterpiece – Beethoven's Hammerklavier Sonata – to a full Barbican Hall last night. And not a single note of music written after 1893.

The Holland Festival is one of the greats. It has a British director, the articulate Ruth Mackenzie, formerly of the Chichester Festival and the cultural Olympiad, now into her second year. It’s the same age as Edinburgh and Avignon – 70 in 2017 – but not as well known, though it should be. “We must,” Mackenzie says, “seriously punch above our weight. And we do.” The festival was founded after the Second World War on, comparable to the Scottish and French ones, principles of reconciliation and presenting the best productions of the human spirt.