Among them were Bollywood heavyweights like Shah Rukh Khan, who made jokes about his bad singing voice before proceeding to sing.
“I can, I will, and I must help,” Khan told fans after.
Over five million viewers tuned in for the I For India concert, which was live-streamed via Facebook on Sunday. Other superstars who made an appearance included legendary actor Amitabh Bachchan and Priyanka Chopra, who reminded fans that "we will get through this together".
All donations will go to non-profit GiveIndia and their Covid-19 relief efforts.
The concert had some international guests too. US singer Nick Jonas strummed the guitar and sang his single, Jealous. Popular YouTuber and US late night show host Lily Singh did a mini comedy skit.
Actor Will Smith made an appearance towards the end, and referenced the hundreds of millions of migrant workers in India who have been forced to walks hundreds of kilometres as they were stranded from their homes when the lockdown was announced in March. "We need initiatives like this to garner our support and donate," Smith told fans.