Bruckner fans are a dedicated and erudite bunch: a quick stare at the Wikipedia entry or the Bruckner Society's website gives you more to read than you can possibly imagine about Bruckner's life and approach to his work, and last night's performance of his unfinished Ninth Symphony had more audience members poring over copies of the score than most concerts.
There's certainly plenty to pore over. Bruckner occupies a unique position in musical history: his symphonies are firmly grounded in the German romantic tradition, but they are full of musical techniques that would come into their own in the twentieth century. In Bruckner's ninth symphony, you can hear pointers to the styles of many composers that followed him. So the music is polyphonic, with the orchestra often split into several voices that are distinct and not always obviously related - but to a much less radical degree than Mahler. The voices are often in apparently unrelated rhythms - but the whole is not outrageously polyrhythmic in the way that Stravinsky sounds. Percussion plays a huge part in the symphony's backbone - but it's just a single timpani player. And the harmonies and chord progressions are clearly out of the romantic norm - but not as much so as Shostakovich or Schoenberg.
I was taken by one stylistic trick of Bruckner's own: the way he uses recurring themes. A theme is stated powerfully, and then developed; after a few key changes, the music seems to have come to a dead end and stops. But what Bruckner has done is to set your ear up for a restatement: after a pause for breath, the original theme is reintroduced with greater force than before. There are several of these motifs in the ninth symphony: it makes for a work that is extraordinarily satisfying to listen to, and you get a sense of being transported by powerful waves of feeling.
There is so much going on in this symphony that it takes extraordinary precision to get the best out of the music: it would be so easy for the whole thing to turn to mush. Conductor Günther Herbig may not be a household name in England (he has had a long and distinguished career in Germany and the United States), but he clearly knows his Bruckner and knows how to drill an orchestra: the London Philharmonic showed from the outset that they were tightly knit together. The complex interplay between voices was wonderfully lucid, and when the orchestra came together for the big power chords, the Royal Festival Hall was fairly shaking. In particular, the first and second movements have some fabulous brass writing (it's a huge 16 instrument brass section) and the LPO's brass players were right at the top of their game.