The Roots have pulled out of the David Bowie tribute concert this Friday, April 1.

The rumoured dispute is apparently over musical equipment or the use of musical instruments.

The band's drummer Questlove posted a picture on Instagram of P. Diddy with the caption "Mood. I've never been so insecure or petty as to deny a fellow musician use of ANY of my equipment (or my band's equipment----or resources or contacts or knowledge or ANYTHING) it angers me when that same courtesy is not reciprocated," he wrote.

"We have patience. But we do NOT have patience for the #Bitchassness. Enjoy your precious equipment."

The rap group were set to join a host of stars that includes the Pixies, Blondie, the Flaming Lips, Mumford & Sons, the Polyphonic Spree and many others.

The charity gig will be streamed live and fans will be able to donate to a host of different charities in order to be able to view the concert.