BottleRock Napa Valley 2023: Music, Hidden Gems, Photos, Scenes, and Weather.

Post Malone delivered a mesmerizing solo act as the main stage headliner for the opening day of BottleRock Napa Valley. He performed his chart-topping hits and gave a taste of his upcoming fifth album, "Austin." The singer invited a member of the audience up onto the stage to help him perform the ballad "Stay" on an acoustic guitar and smashed the instrument with a too-on-the-nose rendition of "Rockstar." The three-day festival is expected to draw 40,000 music fans each day to the Napa Valley Expo with a lineup that boasts more than 75 acts.