Art + Soul brings the spirit of Oakland to the heart of the city, with vendors, dancers and musicians sprawling throughout downtown. This year, the city-sponsored festival is headlined by Grammy Award winners Fantastic Negrito and Estelle. Other stages feature lineups themed around blues, gospel, salsa music and the kinetic or circus arts. As usual, there’s ample family-friendly programming in store, and tickets start at a modest $12 for adults.