By the look of the crowd, there aren’t many fluffy, oversized or sparkly hats left on the shelves in Glasgow. Among the originators of the quintessentially 90s acid-jazz genre, Jamiroquai are now a legacy act worthy of their own themed dress-up. Tonight, sole founding member and noted headgear enthusiast Jay Kay (hat tally: four) draws from three decades of material, ranging from their 1993 debut...