Childish Gambino, SZA, Khalid also score five nominations apiece on Music's Biggest Night
Rapper adds inspirational cameo on band's 'Songs of Experience' track "Get Out of Your Own Way"
'DAMN.' rapper also lounges on sports car in clip for collaborative track, "New Freezer"
Usher, Hugh Jackman, Forest Whitaker also praise socially conscious festival in 'Louder Together'
Rapper co-directs latest 'Damn' visual
Don Cheadle tries to interrogate MC in intense new clip
Second new song released in less than a week
"'To Pimp a Butterfly' was addressing the problem," rapper said in new interview. "I'm in a space now where I'm not addressing the problem anymore"
The xx, Bon Iver, Future, Lorde, New Order, DJ Khaled, Gucci Mane, Father John Misty, Schoolboy Q, DJ Shadow also set to perform at annual fest
Artists debut their 'Starboy' collaboration at small venue gig