Iggy Azalea became the first artist since the Beatles to secure No. 1 and No. 2 spots of the Billboard Hot 100 simultaneously with her first two charting singles. While it took the industry by surprise, music analytics company Next Big Sound predicted her rise in the charts.

Young people have always looked to music, filtered through radio DJs, for identity. For generations growing up with every song at their fingertips and algorithms replacing DJs, how is the medium being redefined, and what new roles can it fulfil?

Every year, more than 6 million people attend live music events in the UK. Festivals are no longer about peace, love and LSD – they're commercial success stories. But have they kept any of their rebellious spirit, or are they just Instagram islands where anything goes?

Neil Young's new HD music player, PonoPlayer, surpassed its Kickstarter goal of $800,000 just hours after launching. But can people really tell the difference in sound quality, or is it purely psychological? And how will its Toblerone shape fit in our flexible, sleek world?