The centenary bandwagon always passes some composers by: how many organisations in Britain will be celebrating George Lloyd or Tikhon Khrennikov? Other figures almost get steamrollered flat with attention; Britten, I’d say, is this year’s likely candidate. But who could throw any stones at the birthday cake and bunting created by the Philharmonia Orchestra for that mercurial Polish wizard Witold Lutoslawski?

Period instruments demand absolute honesty from their players. Their sound is their personality - candid, quirky, eccentrically beautiful - but their soul is revealed in the spirit of the playing, where beauty is not skin deep and the expressiveness of phrasing in the strings is created in the bow arm and from a truthfulness of intonation that does not hide behind vibrato.

Kings Place’s Bach Unwrapped season invites audiences to come at the composer from new and unexpected angles. Bach gets arranged, adapted and re-orchestrated, and his legacy is showcased in works from three centuries. Occasionally however he also gets played straight – and it doesn’t get much straighter or more authentic than the Academy of Ancient Music and the Choir of King’s College Cambridge performing the St Matthew Passion.

And so John Adams’s residency with the London Symphony Orchestra reaches its finale – a brisk allegro of a concert with a cheeky coda in the form of the composer’s latest orchestral work, Absolute Jest.

We’re still in the foothills of the Southbank Centre’s year-long The Rest is Noise festival, but already the harmonic ground is becoming unsteady underfoot. Last weekend saw the gemütlichkeit of Johann Strauss give way to the brutality of Richard Strauss, exposed us to the moistly chromatic flesh of Salome that lies behind the seven veils, and showed just a hint of Schoenbergian ankle. So surely this weekend’s return to 1900 and Elgar’s choral-society-stalwart The Dream of Gerontius is something of a retreat?

The Britten centenary will, among much else, inspire performances of his comparatively under-regarded instrumental works - pieces like the cello suites and the string quartets, already sampled in brilliant performances at last week’s Wye Valley Chamber Music Festival.

“It looks like the Coconut Lounge,” remarked John Adams as he stepped up jauntily to introduce the first of two big string pieces composed 30 years apart. The folk with their drinks at the candlelit tables, though, were never allowed to sit back and let it all wash over them.

This may have been the official, lavish fanfare for the Southbank’s The Rest is Noise Festival, which if the hard sell hasn’t hit you yet is a year-long celebration of 20^th Century music in its cultural context and based around Alex Ross's bestseller of the same name. For Jurowski and the LPO, though, it was very much through-composed programme planning as usual, though with a sweeping bow towards the festival theme of how modernism evolved as it did.

Bach: The Six Cello Suites Peter Wispelwey (Evil Penguin Records)

Want to learn more about 20^th century music in action? Starting tomorrow, you could lose yourself in the labyrinth of the Southbank’s year-long The Rest is Noise festival, and plough your way through Alex Ross’s monumental but partisan study of that name. Or you could learn a lot in a short space of time from John Adams’s mini-residency with the LSO at the Barbican.