Enjoy some free outdoor fun in Marin, with one of this year’s Pacheco Plaza Summer Music concerts. There’s plenty of places at the Plaza to grab some picnic eats, so enjoy some al fresco dining and get your groove on with the band. The award-winning Dr. Loco’s Rockin’ Jalapeño Band has been celebrating the rich mix of Mexican American borderlands musical traditions since 1989. Dr. Loco’s RJB lineup highlights the unique veteran talents of Whetland, Wyoming-born/San Jose-based guitarist/vocalist Tomas Montoya, San Antonio, Texas-born/ Reedley-based bassist Manuel Polanco, Modesto-born/South San Francisco-based drummer John Ulloa, and Bakersfield-born/San Francisco-based accordionist/trumpetist/vocalist Miguel Govea.