Ukrainian President Volodymyr Zelenskyy has appeared in a pre-taped speech at the Grammys.
Mr Zelenskyy was introducing a tribute performance for Ukraine by John Legend, saying "Fill the silence with your music".
Mr Zelenskyy started his address by outlining what Russia's invasion of Ukraine has meant for his country.
"The war.
"What is more opposite to music?
"The silence of ruined cities and killed people.
"Our children draw swooping rockets, not shooting stars."
He said 153 children had died and more than 400 children had been injured.
"Our musicians wear body armour instead of tuxedos.
"They sing to the wounded in hospitals."
He urged musicians at the Grammys to "fill the silence with your music."
"Fill it today.
"To tell our story."
Mr Zelenskyy urged the media and people on social media to "tell the truth about this war."
"Support us in any way you can.
"Any — but not silence."
John Legend performed Free with Ukrainian exiles including singer-actress Mika Newton and poet Lyuba Yakimchuk.
Tribute paid to Taylor Hawkins
The Grammys ceremony included a tribute to those in the industry who had died recently, including the late Foo Fighters drummer Taylor Hawkins, with singer Billie Eilish wearing a T-shirt honouring Hawkins when she performed.
The Foo Fighters won three Grammys — Best Rock Performance, Best Rock Song and Best Rock Album.
They had cancelled their scheduled performance ahead of the show.
A ceremony free from controversy... almost
There were a few references made about Will Smith slapping Chris Rock at that other major awards ceremony — the Oscars.
Host Trevor Noah told the audience at the start of the show that there was lots to look forward to.
"We're going to be keeping people's names out of our mouths," he said to nervous laughter from the audience.
When multiple-Grammy award winner and Oscar-winning Director Questlove took to the stage, he also alluded to the incident.
"I'm going to present this award and I trust that you people stay 500 feet away from me."
Questlove received an award from Chris Rock immediately after the Oscars slap last week.
Australians RÜFÜS DU SOL won their first Grammy, winning Best Dance/Electronic Recording for their single Alive.
The 64th annual Grammys were reasonably free from controversy, except for when musician, record producer and DJ Dillon Francis walked down the red carpet in a T-shirt, holding a plastic shopping bag.
Dillon explained in a Tweet that he went shopping and when he arrived back at his hotel, ran into American DJ Diplo in the lobby and received a late invitation to the Grammys.
"So I'm like screw it I'll go.
"I didn't think we were gonna walk the red carpet until we ended up walking the red carpet," he wrote.
It's safe to say in the spectrum of controversies — this one would be pretty minor.
