Liam Gallagher's band has pulled out of the double-site music event later this month (Aug13) to allow guitarist Gem Archer time to recover from a serious head injury which left him hospitalised.
The cancellation left a gap in the line-up, so festival bosses picked dance star Angello to fill in.
Angello was already on the bill to perform on one of the smaller stages, but he will now take over Beady Eye's slot on the high-profile 4Music Stage.
Other acts on the bill for the event, which kicks off on 17 August (13) at two sites in England, include Beyonce, Kings of Leon and The Script.
Archer is now out of hospital and resting at home following his accident. Editors at British newspaper The Sun report the musician suffered a fractured skull after falling down stairs at his London home.