Song hails from singer's forthcoming album 'Long Live the Angels'
Flying eagles, crashing waves highlight clip for 'Long Live the Angels' single
Scottish singer also reveals album's hard-charging lead single, "Hurts"
Nine Inch Nails, Calvin Harris, Queens of the Stone Age and more onstage and behind the scenes in Philadelphia
Singer-songwriter becomes first woman to receive the award
Fitz and the Tantrums, Solange, Emeli Sande also on the bill
'It was a bizarre night, very cool,' says Brit Award-winning singer