For travellers, “music is a passport, especially in Russia…” Borrowing an adage from the British diplomat Thomas Preston, Sophy Roberts could be speaking about the eccentric quest that lies behind The Lost Pianos of Siberia.

Not even the unengaged or terminally weary could have dozed through this. Pianists have often commented how the Wigmore Steinway is too big for the hall, and most adjust accordingly. Not 27-year-old Italian Beatrice Rana, but not in the bad way of interpreters who simply bash (there was a young Ukrainian here recently who did just that).

In Beethoven anniversary year, there will probably be many more "Moonlight"s, meaning the Sonata, than the real thing (though we've been lucky to see the crescent in close conjunction with Venus these past two nights). Not many pianists would dare to place it at the beginning of a programme.

"Citizen. European. Pianist," declares Russian-born, Berlin-based Igor Levit on the front page of his website. One should add, since he wouldn't, Mensch and master of giants. High-level human integrity seems a given when great pianists essay epics: certainly true of Elisabeth Leonskaja and Imogen Cooper tackling respective sonata trilogies by Beethoven and Schubert, or András Schiff in Bach's Well-Tempered Klavier. Last night was on that level.

"What is it about Mozart?" asked Sviatoslav Richter in 1982. "Is there a pianist alive who really manages to play him well?...Haydn is infinitely less difficult to play (he's almost easy, in fact).

Schubert: Symphony No 9 Scottish Chamber Orchestra/Maxim Emelyanychev (Linn)

As the attention-jostling hype becomes ever more unashamed, we get further from the music. The myths and the 'message' get louder, to the point where the question of whether the music itself might actually be worth hearing can become secondary. I've seen music industry people this year happy to treat live music as a "hang" – in one case that stays in the mind, the headline act at a festival – and to chat through it rather than to listen.

Fine-tuning piano sound to Wigmore acoustics can elude even the greatest. Add a second Steinway and a wide range of percussion instruments, and the risks would seem to be hugely increased. So it was amazing to witness what seemed like sonic perfection throughout yesterday's Radio 3 Lunchtime Concert from the back of the hall.

There are encores and encores – most a friendly, minimal farewell gesture from the soloist; some a jolly, festive unwind after a particularly taxing piece. And then there’s the luxury free gift that Sir András Schiff bestowed on us during the second of two Barbican concerts with Iván Fischer and his Budapest Festival Orchestra.

The megastars are here at the Barbican, for an intensive three days in the case of the LA Phil and Gustavo Dudamel, throughout the season as the hall shines an "Artist Spotlight" on pianist Yuja Wang. Despite a shallow opener showcasing the individual talents of the Los Angeles principals and daft, rollicking Sousa at the end, there was a seriousness of intent and depth of focus that belied the touring glitz.