Jay Z previously claimed that there's a 'smear campaign' against the streaming platform
Badly Drawn Boy, The Pains Of Being Pure At Heart and Omar Souleyman also confirmed
@Music designed to encourage community participation
Pre-sales allow tickets to be purchased before going on general sale
The singer, who starred in Channel 4's 'Rock School', died in March
Ely died at home following a long battle with illness
Festival bosses move to discourage use of legal high