Even when it's an album you've been eagerly awaiting, a two-disc package always feels slightly daunting. There's always the cynical little voice at the back of your mind telling you that halfway through disc two you're going to get bored, and the record you've eagerly awaited is going to be a chore.

However, while Zomby's With Love comprises 33 tracks sprawling across two discs, it clocks in at less than an hour and a half long (81mins, to be precise - 42mins for Disc One and 39mins for Disc Two). What's more, it's fascinatingly unsettled, built of constantly changing soundscapes, which means you'll never feel settled listening to this record, you never get close to feeling bored because nothing stays in one place for too long on With Love.

The schizophrenic melee of Disc One sees the electro producer drawing on everything from sinister jungle beats to minimalist chimes and soulful vocal samples. Like the sonic imagining of some dystopian future, 'As Darkness Falls' twitches and bleeps into action; a stuttering beat tumbling over itself behind gasping vocal samples and an unnerving siren sound. But for all the eerie darkness found on the track, it's still an undeniable head-nodder, with a current to it which pulls on the listener irresistibly.

You're quickly whisked from track to track on this record - with 'As Darkness Falls' giving way to 'Ascension' with bullet-like speed. In other cases this sort of attention deficit-suffering attitude to album composition would be frustrating, and perhaps on first listen it is here too - but the more you listen to this record, the more you realise how vital it is. You rarely know where you are or where you're going on With Love.

The pervading darkness hasn't lifted with the introduction of Disc Two, as the spooky clanging that introduces 'Black Rose', and the shoulder-rolling hi-hat flourishes of 'Digital Smoke', proves. While it's true that something of a shadow lies over this whole album - always slightly sinister, slightly haunting - it's by no means devoid of variation. There might be one coherent theme to this record, but Zomby finds a myriad of ways of expressing it. At times it feels like a frustrated ball of energy, twitching and discordant - at others (like 'How To Ascend') it feels like a simmering pot of restraint.

It's hard to put your finger on exactly what's great about With Love, and the more you think about its component parts, the harder it is to keep the whole thing in sight. But it's one of the most engaging albums you're likely to come across this summer. You're kept guessing in a way few artists have the skill or vision to execute. The beats are at times divinely satisfying, yet you're frequently left frustrated when they cut off abruptly. Whatever you feel about this record after your first listen, you'll definitely revisit it.