The song 'All Day' will feature on the rapper's next album
Rapper will perform at Brit Awards later on tonight
Rapper is last-minute addition to bill that also includes Madonna, Taylor Swift and Royal Blood
The rapper also discusses the infamous Beck incident and recording a whole album with Drake
Arcade Fire frontman uploaded song after tweeting about modern music
Rapper was living in the UK when violence broke out in 2011
West performed with Sia and Vic Mensa as part of same show
Live show took place at New York's Irvine Plaza last night (February 13)
Song is third to be taken from rappers upcoming as-yet-untitled album
Rapper's new Adidas shoe will be releaved later today (February 12)