In the five years it took from conception to completion of the debut Years and Years album Communion, frontman Olly Alexander did a lot of growing up. Part of this was the simple, pleasing physical experience of seeing huge success at close range. ‘When the album started I was 23,’ Olly notes. He will be 28 this year. ‘I’ve discovered a lot about myself.’ With Communion, Years and Years made a palpable new tribal impact on pop. They mapped out something of the treasure trail of pop’s special inlet, locating a loyal band of brothers and sisters for whom Olly meant more than someone to look up to, glistening on stage.