A decade and five albums in, Me su i eyrum vi spilum endalaust is the sound of a group comfortable in its own skin.

Mostly shying away from the otherwordly, introverted soundscapes, this is a record that confirms Sigur Ros is operating from planet earth, as the most esoteric of pop groups.

The angelic falsettos of Jonsi are now backed by sparse, acoustic lines, fractured keys and off-kilter rhythms, with the reverb-laden guitars now used sparingly.

Opener and first single Gobbledigook, with its driving tribal drums and floating, acoustic guitar lines, signals the group's new sense of wide-eyed wonder.

Inni mer syngur vitleysingur follows, an Arcade Fire-like anthem with its stomping brass, urgent vocals and bubbling finale.

Festival sees the band expand past the four-minute mark, with the first half featuring Jonsi's plaintive sighs, an organ and his gently-weeping guitar.

The song builds until pounding kick drums and a bursting chorus of strings and brass take over.

The real highlight is Ara batur, recorded in one take at Abbey Road with the London Sinfonietta and London Oratory Boys' Choir.

Showing incredible pacing, the song builds on the fragility of a lone Jonsi to feature 90 people singing and playing into an explosive, crashing extravanganza.

It sounds over the top, but it absolutely floors you with its power and elation.

With a peak like this, the album closes with four desolate, sparse tracks that take you back to Sigur Ros' roots.

Me su i eyrum... is the sound of the band showing no signs of running out of steam or ideas - it is a worthy addition to its impressive canon of work.