Ravinia has a huge 3,000-seat open pavilion, but also a massive lawn where people picnic and listen to the concert under the stars. Tonight, they are having a "Virtual Lawn Party" fundraiser. It's hosted by Kristen Chenoweth, and has a mix of classical, pop and jazz performers, featuring Ramsey Lewis, Michelle DeYoung, Patricia Raquette, Marquis Hill and Kevin Cole.
You can see the "program book" for the show with the selections to be performed here.
And the Virtual Lawn Party will stream here. Or if it works correctly, embedded below --