It doesn't matter what you're expecting, because if you've heard the Chemical Brothers before and have the least desire to listen to their fourth album, you're sure to find what you're after, and not much else. If you want to rave at maximum volume – no problem. If you like your electronica to have a space theme – OK. Or perhaps you just need a tune for daily self-reflection – check. It's all the same old routine, no surprises.

The album starts by beckoning you to "come with us and leave your Earth behind," and off you go on a trip through the over-sampled (and unsurprising). "It Began in Afrika" dips into one-note electronic sounds and exclamations like those that someone being booted in the stomach might produce, before moving on to "Galaxy Bounce," "Pioneer Skies" and "Hoops," which recall some of the duo's all-time most-popular tracks.

Strangely enough, there's little internal consistency in each track: The beat is steady enough, but the psychedelic intros don't tell you anything about how the mix will end up, especially after seven minutes or so.

The album is so diverse it's hard to like everything. However, the hypnotic suggestion that "you should feel what I feel" over the slowly blooming dream-melody in "Star Guitar" and the upbeat ending of "The Test" should make it worthwhile. Even if you weren't expecting anything.