Ventura Bluegrass Jams Great food and drink, lots of friends, tons of fun! We typically have between 30 and 50 bluegrass musicians of all skill levels. There is plenty of space for up to three jam circles. Our jams are every 2nd and 4th Thursday of the month from 6 PM until 9:3 in Public bookmarkswith bluegrasscacaliforniajamsessionventura