As per Dave Mason social media:
It is with deep and profound sadness that we share the news of the passing of Dave Mason. On Sunday, April 19, after cooking an amazing dinner with his beloved wife Winifred, he sat down to take a nap with sweet Star (the maltese) at his feet. He passed away peacefully, in his favorite chair, surrounded by the beautiful Carson Valley that he loved so much. A storybook ending. On his own terms. Which is how he lived his life right up until the end.
He leaves a lasting imprint on the soundtrack of our lives and the hearts he has lifted. His legacy will be cherished forever.
Check out one of his last shows he ever performed here: Dave Mason show review