Dee Snider of Twisted Sister and actor-musician Rob Morrow were among the performers at the event.
The concert was held at BL Dancehall and Saloon. That business was opened in 2020 by the owners of the Borderline Bar and Grill in Thousand Oaks, which was closed after the deadly mass shooting in 2018.
"I can't imagine a better place than Borderline to heal and to bring awareness to people about the importance of unity and community, and getting together to get a message out that we're here," concert organizer Ken Greene said.
Snider, who MC'd the show, said he has Ukrainian roots.
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"I am the grandson of the Ukraine. My grandfather was Ukrainian," Snider said.
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For Snider the benefit was both about his personal connection and a way to send a clear message.
"If you saw the Grammys last night, you saw the president of Ukraine saying, 'don't stop the music, play the music for us, keep playing the music for us, sing for us, play for us, any way you can help.' This is helping," Snider said.
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Playing songs from the Ukrainian national anthem to classic rock hits, more than 30 musicians joined the show.
They said it's the least they could do to show their support for Ukraine.
"It's a small thing but it reverberates and if enough people take little action like this, aside from the money that we're going to raise, it raises awareness so I didn't even think twice. I'm happy to be here," actor and musician Rob Morrow said.
All of the money raised at the concert goes to Save the Children's Emergency Children's Fund to help the youngest victims of the war.