On Saturday, March 30, Cooper Vineyards in Louisa will fuse three favorite indulgences — jazz, chocolate and wine — at its annual Jazz & Chocolate event from 11 a.m. to 5 p.m. Dip into liquid chocolate provided by Chocolate Fountain Fun, sample an array of sweets from regional chocolatiers such as Chocolates by Kelly and de Rochonnet Delights, and dance the day away to the smooth sounds of live jazz by The Rhythmasters, an ensemble that has been entertaining Richmonders since 2001. Advance tickets are available for $15 at coopervineyards.com , or pay $20 at the door.