Louis Andriessen La Commedia, Barbican Hall, London

In what would become known as the Notenkrakersactie, a group of composers, Louis Andriessen amongst them, famously disrupted a Concertgebouw Orchestra concert in 1969, protesting its Establishment politics and unwillingness to engage with the younger generation of Dutch firebrands. Nearly half a century later, Andriessen is a recipient not only of commissions from said orchestra but also of what is arguably the most prestigious (and certainly the most lucrative) composition prize in the world, the Grawemeyer Award. There is no great irony here, of course – music history is littered with examples of iconoclasts whose originality disoriented contemporary opinion, not to mention angry young men whose radicalism mellowed with age – but the case of Andriessen is certainly striking.