Siddhartha Mukherjee - Sean Parker and the Parker Foundation Celebrate the Launch of The Parker Institute for Cancer Immunotherapy held at a private estate in Los Angeles. - Los Angeles, California, United States - Wednesday 13th April 2016 (1 Picture)
Photo credit: Adriana M. Barraza
View All: Parker Institute Launch
The acclaimed performer had just cancelled touring due to a battle with cancer.
Many ticket-holders couldn't get into the O2 Arena show on Tuesday night (September 19th) because they didn't bring photo ID to match their booking.