The annual Mystic Music Fest, a free, family friendly afternoon of live music, returns to the Condon Shell for its 12th edition. Presented by Robar Therapy Massage and Medford resident Russ Robar, this year’s bands will be Swampanova starting at 1 p.m., followed by The Spittin’ Vinnies at 2:30, then The Porter Squares at 4. Erik Barth will perform mini sets. Medford Brewing Company will be on hand with a beer garden, and there will be face painting for kids and a massage chair.