People are retreating into digital bubbles, spending less time interacting with the world around them. Hoping to capture their attention through their devices, brands likeBillboardare sounding out the rules of engagement in this personal space.

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?

“I'm not a businessman, I'm a business, man,” raps Jay-Z. Collaborating with Samsung for the release of his new album, he's becoming a media empire – making money for himself, kudos for Samsung, and social currency for his fans.

US music chart company Billboard has announced a partnership with Twitter to create Real-Time Charts. The service will track Twitter conversations about music and combine this data with sales figures to create a new type of chart based not only on sales, but on social media mentions.