Billboard to launch music documentary series for Snapchat Discover
Luke Bryan, Demi Lovato, and Rae Sremmurd will be among the featured artists
Huge stage fire at Europe music festival prompts evacuation of thousands
No injuries were reported at Barcelona's Tomorrowland festival
John Boyega, fellow actors, audience evacuated from London theatre after bomb scare
The 'incident was found not to be suspicious,' according to the famed Old Vic Theatre where the 'Star Wars' actor is starring in 'Woyzeck'