Picture walking into a hopping dance club and not hearing a sound. It’s what’s known as a silent disco, where people listen to music transmitted through wireless personal headphones rather than speakers. Saracina Vineyards in Hopland is holding one as part of its Haunted Wine Cave event, which will also include wine flights and a Halloween costume contest. As the name of the event implies, it will be held in the vineyard’s wine cave on October 22, 5–9 p.m., and is for adults only (no kids or pets). Tickets are $40–$50 and may be purchased at tinyurl.com/yzswax5t.