Baleful prophecies were rife before the concert. Was Vladimir Jurowski right to let Mahler’s only total tragedy among his symphonies, the Sixth, share the programme with anything else, least of all a new viola concerto in which the solo instrument’s naturally pale cast of thought seemed likely to be indulged by James MacMillan – another composer not afraid of rhetorical angst?

Now this is what I call an orchestra showing off: you unleash four of your horns on the most insanely difficult yet joyous of sinfoniettas for accompanied horn quartet, Schumann’s Konzertstück, and later let the other four light the brightest of candles on the enormous, rainbow-dyed cake of Beethoven’s Eroica Symphony. How they battled it out between them for who did what I can't imagine, but both groups covered themselves with glory.

Not every Yuletide fixture need be commercial and routine. Certainly St John’s annual Christmas Festival packs them in, but why wouldn’t it when the voices for the last two events, backed up by no less than the Orchestra of the Age of Enlightenment, are the best you could possibly find for the great monuments of Handel and Bach?

Nothing tests small-hall acoustics better than that most exuberant of holies, the Sanctus from Bach’s B minor Mass. After one of the year’s big disappointments, the blowsy sound coming from chamber ensembles in the Barbican/Guildhall School’s new Milton Court –  a surprise miscalculation from Arup acousticians -  it seemed imperative to get back to Kings Place’s Hall One, which feels bigger but is some 200 seats smaller (420 to Milton Court’s 608). And oh, the clarion cries of the 32 young Cambridge choral singers!

Various Artists: German Measles Vol 1 – Flames of Love / German Measles Vol 2 – Sun Came Out at Seven

Is anyone else sick of creepy brotherhoods skewering the transcendent in Mozart’s and Wagner’s late operas? Both Sarastro’s cult and the company of the grail are in sore need of change - "fresh blood" would be an unfortunate term under the circumstances - when we first encounter them. But both Simon McBurney’s production of The Magic Flute at English National Opera and now Stephen Langridge’s unleavened Royal Opera Parsifal suggest that these are sects not worth joining or saving.

In 1998, as I was driving home and flipping through the radio channels, a piece of music caught my ear. A string trio. With elements of Bartók , Stravinsky and maybe Janáček? And yet I was pretty sure none of these composers had written for this combination. I pulled over and sat transfixed  by the side of the road until the announcer said: “that was a string trio by Gideon Klein”. Who?

Stuttgart Ballet, one of Europe's most highly respected companies, is clearly determined to show London its best sides – all of them. Thirteen pieces in one performance is less a mixed bill than a tasting menu, and one that aims to impress: this smorgasbord of pieces were all choreographed for the company, and more than half have not been performed in the UK before.

Although most readily pigeonholed as a minimalist pianist whose compositions are as much about the space between the notes as what he actually plays, Germany's Nils Frahm has also worked with the Juno synthesiser and released pieces which edge towards techno. Until now, he hasn't made it easy to get a handle on his full scope. Spaces is the first release to capture this. A live album which doesn’t sound live, it includes compositions which never been released before. Despite occasional bursts of applause, it feels like a studio album.

For the Leipzig Gewandhaus Orchestra’s second residency at the Barbican Centre Riccardo Chailly pulled focus on an entirely new sounding Brahms. Gone were all those bad performance practices, bad habits, from the early 20th century, gone was the lingering romanticism, the willful soupiness, and in with a vengeance came a classical rigour, a lean and hungry vitality.