Nielsen said that the two-hour concert, which featured appearances and performances from their homes by multiple celebrities including Taylor Swift, Lady Gaga, the Rolling Stones, Oprah Winfrey and Beyonce, was aired on 26 U.S. television networks.

The event, the biggest celebrity effort during the coronavirus outbreak, was viewed by an estimated 20.7 million viewers in the United States, Nielsen said. Audiences in other nations and on streaming platforms were not available.

The concert, organized by the World Health Organization (WHO) and nonprofit Global Citizen, raised some $127 million from corporations and philanthropists for the work of the WHO’s COVID-19 Solidarity Response Fund.

Members of the public were not asked to donate but were encouraged to practice social distancing and handshaking and to show their appreciation for healthcare, grocery, delivery, transport and other workers.

Saturday’s two hour broadcast special was preceded by a six-hour streaming event which featured musicians and other celebrities from as far apart as Asia and the Middle East.

Reporting by Jill Serjeant; Editing by Christopher Cushing