Magnus Lindberg burst onto the contemporary music scene in the 1980s with his early work Kraft (as in "power", and not the American food conglomerate and inventor of Velveeta cheese by-product substance), an avant-garde spectacular that took the "sound mass" procedures of Berio or Xenakis and wedded them to an explosive rhythmic energy. He's broadened his style since then, taking in tonal elements and even the occasional tune, but the rhythmic vitality remains, and his coloristic gifts, his ear for ever new and remarkable instrumental sound combinations, have only increased. Aura is a four-movement symphony as indescribable as it is a joy to hear. Dedicated to the memory of Lutoslawski, the piece shows its composer similarly possessed of a vibrant, communicative personal musical language. Although it plays continuously for about 37 minutes, newcomers to Lindberg's sound creations should start with the finale, a sort of dance that begins with simple tunefulness before finding itself in a sort of riotous minimalist hell. It's hugely fun, as is the entire work.

All three works on this disc are essential Birtwistle. Oliver Knussen is one of best conductors in the world. The London Sinfonietta needs no introduction. And NMC is one of the great independent labels. What else do you need?
Well, I know Birtwistle's music alienates some people, and in its way it is more radical than anything 50/60s Darmstadt serialism could offer. But it is perhaps also the most interesting, often in a extra-musical way.