“Don’t feel yourself,” is how Snoh Aalegra once explained the Swedish concept of Jantelagen – a preference for modesty and aversion to ego – which held sway during her upbringing as a second-generation Iranian in Sweden. But when the 33-year-old singer took to the stage at a packed-out Brixton Academy on Wednesday night, clad in a glittering silver catsuit and swathed in peachy fog, she appeared to have discarded that notion. She was certainly feeling herself.