Sir Elton John, Sir Paul McCartney and Stevie Wonder will perform in a live TV special, under the direction of Lady Gaga, to support healthcare workers in the fight against coronavirus.
Duffy has shared a harrowing account of being raped, drugged and held captive, saying she was at "high risk of suicide" following the ordeal.
Marianne Faithfull is being treated for COVID-19 in hospital, her agent has said.
NHS England's medical director has said he is "outraged and disgusted" at conspiracy theorists who claim 5G masts are the true cause of the coronavirus outbreak.
Pink has demanded more COVID-19 testing in the US after revealing she contracted the deadly virus.