The sight of a rock band looking smug as an orchestra plinks away behind them in a slightly embarrassed way is a scenario nobody emerges from with much dignity. Tonight's concert, however, was an example of how a total integration of orchestral, electronic and rock elements can bring rewards.

Efterklang are a five-piece from the tiny Danish island of Als who have refused to let their lack of classical training get in the way of big ideas involving strings, brass and heavenly harmonies.

Tonight, they were recreating their 2007 sophomore album, Parades, arranged for the Britten Sinfonia by Danish composer Karsten Fundal.

Efterklang were easy to spot – they were the ones dressed as Italian futurist boy scouts. This alarming choice of outfit in no way suggested an attitude of superiority, however, and the band worked hard to do justice to the talents of the musicians they were sharing a stage with. Whatever unusual shifts and experimental turns took place, they were always held down by discipline and a strong sense of audience-friendly melody.

Of many beautiful moments, Mimeo stood out, in which a choir rose to a crescendo of military fervour that then fell away and died, to make way for a stark piano section reminiscent of the melancholic reflection of Erik Satie.

"Wow! It's nice that you are all so quiet!" said lead singer Casper Clausen, suddenly looking like a Danish small-town boy trying to work out how he came to be executing such an ambitious vision before an enraptured audience. The music may have been grandiose, but at its heart was a group of young men marvelling at the wonder of it all.