Listening to Pursuit Of Momentary Happiness, you frequently feel the white-knuckle monomania of Yak’s mission. It’s one of those once-in-a-decade records, whose sheer sense of belief and commitment pulsates through every nanosecond of boundary-breaking sound – like Spiritualized’s Ladies And Gentlemen We Are Floating In Space, and Tame Impala’s Innerspeaker, both of whose creators had a part to play in its genesis.