Chance the Rapper, Travis Scott and SZA will be among the acts performing at a special fundraising show in Los Angeles.
All the money raised from the gig, which was announced earlier this month, will be used to benefit arts programmes in poorer communities.
Mac's family has organised the event, called Mac Miller: A Celebration of Life, following his death last month at the age of 26, from an apparent drug overdose.
Cover image via @macmiller/Instagram