The ceremony takes place this evening (September 6) in London
All 12 nominated artists will perform at the ceremony for the first time ever
Musician also tells NME that most modern music is 'largely unoriginal'
Mercury nominated songstress is streaming her set from Swiss festival
Katy B, Anna Calvi, James Blake and Metronomy also up for £20,000 award
Singer will play dates in Glasgow and Manchester
'Let England Shake' star wants to expand her artistic output
Final video from 12-part series has been released
Singer creates promos for all of the songs on latest effort
Singer also reveals artistic inspirations