There must be at least 100 more interesting pianists in the concert world than Lang Lang, but perhaps he is just the best publicist around, because nothing else can explain why such a vacuous display as he gave last night at the Royal Festival Hall could bring a standing ovation. Most of the evening felt like being on a plushly cushioned chintz sofa with Tinkerbell, listening to Bach, Schubert and Chopin being served as a cream tea. Lang Lang Inspires is the slogan at the Southbank Centre all this week, but what is inspiring? His art - or just his vast skills as a public communicator, with 40 million Chinese piano students now credited to the Lang Lang effect?

For the sheer multiplicity of event, the resplendently rich palette of sound and the incendiary aural thrill it detonates, Marius Neset's Golden Xplosion is aptly named. This second solo album from the 25-year-old Norwegian sax player and composer careens between the hyperventilated counterpoint of “City on Fire” and the glacial, slightly ECM-ish soundscape of “Epilogue”.

As Handel’s Messiah is to Christmas so the music of Bach is to Lent. Every Passiontide churches and concert halls are flooded with performances that include everything from dainty consort renderings of the St John Passion to choral societies delivering all but symphonic St Matthew Passions. Mightiest of all, however, is The Bach Choir’s annual concert. Performed on Palm Sunday to a reliably sold-out Royal Festival Hall, it’s a fixture of over 80 years' standing and a rare opportunity to hear the work sung in English. Love or hate the vernacular approach, it’s hard to argue with the sheer force of almost 200 singers accompanied by a gloriously inauthentic, 50-strong incarnation of Florilegium.

Last night Murray Perahia played Bach, Beethoven, Brahms, Schumann and Chopin, and we heard, quite simply, Bach, Beethoven, Brahms, Schumann and Chopin. Nothing more need be said, if one follows the Cordelia principle to love, and be silent.

If you’ve not already read theartsdesk interview with Nick van Bloss, have a look now. Then hopefully you’ll be persuaded to buy his autobiography and this CD. The sleeve notes refer to Van Bloss’s fascination with Glenn Gould’s iconic 1983 second recording of the Goldberg Variations, but in no way is this performance an attempt to imitate Gould.

A new recording of The Goldberg Variations is now available, by Nick Van Bloss. In the annals of British pianism, it’s not quite a name to be conjured with. Or not yet. Until he performed at Cadogan Hall in 2009, he had not visited the concert platform in 15 years. After a promising early career, he retired at the age of 26. It’s not as if he didn’t play the piano at all in the interim. He just didn't play to anyone but himself. The reason why he gave up performing is simple. Van Bloss suffers severely from Tourette’s syndrome.

Perhaps it was the effect of the elaborately mosaicked and marbled stage of the Wigmore Hall, but when a black-clad Thomas Zehetmair stepped out last night to occupy this space with just his violin and Bach for company, the image was incongruous. Even devotees of the hall will surely acknowledge the fussiness of its aesthetic appeal, the lingering visual excesses of a bygone age making it as unlikely a setting for Zehetmair’s deconstructed style as for the sharp architectural edges of Bach’s Sonatas and Partitas for Solo Violin. Yet host them it did, and in a characteristically uncompromising performance, Zehetmair managed to bring his comfortably sat audience along with him into an altogether less warm and secure place.

In 1932 English pianist Harriet Cohen commissioned the best of Britain’s composers – Vaughan Williams, Ireland, Walton, Howells – to produce transcriptions of Bach for piano. The result, A Bach Book for Harriet Cohen, is a true document of its time, no less fascinating for its rather conservative contents. Conservative is not an adjective that could be directed at Angela Hewitt’s 20th-century reinvention of the project however. With composers including Brett Dean and Robin Holloway, and works inspired by Bach alongside straight transcriptions, it makes for a joyously diverse programme; last night it proved that it works every bit as well in performance as on the page.