Country and rap – only the biggest genres in American popular music – are conspicuously missing from this year’s lineup, but my friends and my Instagram feed are still buzzing with excitement for Austin’s biggest music festival. Lorde, Lola, and Charli cover the pop girlie contingent, while a range of electronic music – from buzzy young NYC band Fcukers and Detroit duo Snow Strippers to big-time DJs Yousuke Yukimatsu and Skrillex – signals a new era for ACL’s 25th. – Carys Anderson