A bluegrass jam session takes place from 6 to 8 p.m., Thursday, Dec. 2, at Vero Amore Pizza (12120 N. Dove Mountain Blvd.). Free. Call 792-9443 for more information. Another jam session takes place from 3 to 5 p.m., Sunday, Dec. 5, at the Udall Recreation Center (7200 E. Tanque Verde Road). Free. Call 296-1231 for more information.