Login submit Mavis Staples tickets are no longer available. If you'd like to be added to our waiting list, please call the Box Office at (413) 662-2111 FreshGrass Festival Friday, September 19, 2014 5:30PM MASS MoCA Tickets are no longer available for sale online, but may be available at the door. Please call the box office at (413) 662-2111 to inquire about availability. All Sales Final. Rain or Shine event Please note: Members need to log in to their account to get the discounted rate Tickets will be mailed end of July Become a member. Members get a discount and never pay the processing fee!