Live music helps boost to music industry growth
Ceremony marks the best in urban music and music of black origin
Pre-sales allow tickets to be purchased before going on general sale
UK pop star will release track on November 13, the same day as this year's appeal show
Details of the musician's health condition have not been revealed
Brownstein officiated a spontaneous wedding in Pasadena on Tuesday with Poehler playing the organ
Victor Ponta steps down after 20,000 people took to the streets over alleged government corruption
Oasis, Blur, The Libertines, Charlie Chaplin and more have all performed at the venue