The "Rocket Man" legend is leading the line-up for Fox Presents the iHeart Living Room Concert for America on Sunday (March 29) - the same day the cancelled iHeartRadio Music Awards were set to be broadcast.
He unveiled the initial bill of artists on Wednesday, when Mariah Carey, Alicia Keys, Billie Eilish, the Backstreet Boys, Tim McGraw, and Green Day's Billie Joe Armstrong were all announced, and now fans have been given even more reason to tune in after rocker Grohl, Smith, and Cabello added their names to the hour-long event.
The show will feature all the musicians performing from the comfort of their own homes, with the use of video and audio equipment, and will pay tribute to first responders and other essential members of the workforce putting their lives on the line to help others during the coronavirus crisis.
Viewers will be encouraged to donate to Feeding America and the First Responders Children's Foundation as Elton and his famous friends belt out their hits.
It's just one highlight self-isolating music fans have to look forward to this weekend.
On Saturday (March 28), another crop of top artists, including John Legend, Ellie Goulding, Rita Ora, Barry Gibb, Diplo, Ryan Tedder, and Joe Jonas will perform from their homes for the 12-hour Twitch Stream Aid fundraising concert.
Charlie Puth, and Madison Beer will also join in the fun, which begins at 12pm EST, with all money donated during the event benefiting the World Health Organization's COVID-19 Solidarity Response Fund.
Meanwhile, Diplo will also deliver a Major Lazer DJ set on the group's YouTube page from 4pm EST, and singer Jack Johnson will front the Global Citizen and World Health Organization's virtual concert series, Together, at Home on his Instagram Live account from 6pm EST.
Country couple Vince Gill and Amy Grant will hit the stage at an empty Grand Ole Opry in Nashville, Tennessee for a family show as part of the Opry Livestream from 8pm EST, and on Sunday, singer Lisa Loeb will be playing for fans on Facebook Live at 2pm EST.