The Oakland Jazz Festival is celebrating its fifth year by expanding to a new location on the campus of California State University East Bay in Hayward. The relaxed, all-day fest features some of the hottest names in contemporary jazz and R&B, including “I Can’t Stop Loving You” crooner Kem, timeless vocal marvel Lalah Hathaway and Eric Benét, whose talent almost makes you forget his messy split from Halle Berry back in the early aughts. Almost. Gossip over that and more while enjoying plenty of food and sun-soaked fun, smooth soundtrack included.