With the cuts still to bite deep, it's enterprising business as usual for both of London’s biggest concert-hall complexes and their satellite orchestras in the newly announced season to come. I use the word "complex" carefully, because as from September, the Barbican Centre, which already has access to LSO St Luke's up the road, will also be using the 608-seater hall constructed as part of its neighbouring Guildhall School of Music and Drama’s Milton Court development.

Lehár’s Merry Widow has been been spreading enchantment across the globe for well over a century. She’s the vintage champagne of operettas, and the prospect of John Wilson popping her cork was more than a little enticing. Wilson, one feels, instinctively knows how this music goes and indeed did so before even the composer put the notes on the page. He was surely born into the wrong century. So why do I feel a "but" coming on? Why did this particular magnum of bubbly not go to my head?

The look for many young Asian guys in deepest west London appears to focus on how thin they can sculpt their goatees. Well-muscled, chiselled even, sporting either a bowl-crop or one of those spiky, gelled, junior estate agent haircuts, and clad in the ubiquitous sports casual that hip hop has wrought, it’s still their beards that draw the attention. These are pencil-thin lines from the ear to chin, interconnected by another over the mouth, part Errol Flynn, part Armand Van Helden.

Looking at John Wilson conduct, it’s possible to think that you’re watching an incarnation of that Proms favourite of decades past, Sir Malcolm Sargent. The immaculate tailcoat, shining white cuffs, the florid gestures with a baton as long as a magic wand: the only missing visual ingredient is Sargent’s self-regarding air.

In this, the work’s 50^th anniversary year, there will be a lot of War Requiems. Benjamin Britten’s howl of Pacifist conviction has lost little of its poignancy since its composition – a period marked by the almost continuous military presence of British forces abroad. With action in Afghanistan coming to a close and political stirrings animating the Falklands issue once again, this plaintive reminder of “truth untold”, of the “pity of war” still speaks loudly and directly.

Sometimes the most disturbing images exist only in our imaginations - and so the questions posed in the preface to Bartók’s operatic masterpiece Duke Bluebeard’s Castle become especially pertinent: “Where did this happen - outside or within? Where is the stage - outside or within?” The answers, surely, lie “within”, making the prospect of a “semi-staged” climax to Esa-Pekka Salonen’s Philharmonia Bartók series, Infernal Dance, a potentially troubling one.

It was bound, in vocal terms, to be a case of Beauty and the Beast. Stefan Vinke, though useful for killer heroic-tenor parts like this one in Mahler’s Song of the Earth, has made some of the ugliest sounds I’ve heard over the past few seasons, ineffable mezzo Alice Coote many of the loveliest, and with great communication, too. The wild card was fitfully engaged old-master conductor Lorin Maazel: would he stop dragging the Philharmonia behemoth-like behind him and let it be the bird of paradise Coote needed to share her deepest meditations?

A legend on the operatic stage, Sir John Tomlinson (CBE) has sung with all the major British opera companies, made countless recordings, and for sixteen years was a fixture at Bayreuth, where he performed leading roles in each of Wagner's epic works. Throughout his career he has worked regularly with English National Opera and with The Royal Opera, Covent Garden, where in 2008 he created the title role in Harrison Birtwistle's The Minotaur.

Next week Sir John Tomlinson (b 1946), renowned mega-bass and routine frequenter of the Covent Garden stage, appears in concert at the Windsor Festival. It is a picturesque halt on a career that sees him circling the world's greatest opera houses in the most epic roles in opera. As is typical of this far from typical singer, the concert is huge in its range, encompassing Mozart, Verdi and Wagner, its lyrical portrayals ranging from servants to gods, from priests to cobblers, human conditions of every shade from ruthless to kind.

Under starter’s orders, baton raised, and they’re off! Following on the heels and wheels of the Grand National and the F1 Grand Prix, the grand adventure of Maazel’s Mahler marathon with the Philharmonia is up and running, albeit at a more moderate pace, although the indefatigable octogenarian whips up a fair head of steam when called for. This particular “celebration” of Mahler’s death 100 years ago (come 18  May), will last until October, allowing for a summer break. The Philharmonia tour, like any respectable travelling show, will take in parts of the UK that many other orchestras don’t reach, like Gateshead and Hull, as well as Germany, naturally, and odd other places like Paris and Luxembourg. So they can’t be accused of not sharing the spoils around or sparing themselves.

Under starter’s orders, baton raised, and they’re off! Following on the heels and wheels of the Grand National and the F1 Grand Prix, the grand adventure of Maazel’s Mahler marathon with the Philharmonia is up and running, albeit at a more moderate pace, although the indefatigable octogenarian whips up a fair head of steam when called for. This particular “celebration” of Mahler’s death 100 years ago (come 18  May), will last until October, allowing for a summer break. The Philharmonia tour, like any respectable travelling show, will take in parts of the UK that many other orchestras don’t reach, like Gateshead and Hull, as well as Germany, naturally, and odd other places like Paris and Luxembourg. So they can’t be accused of not sharing the spoils around or sparing themselves.