LOS ANGELES – In 1967, Brenton Wood looked as if he was on the cusp of mainstream success. The Compton crooner’s single “The Oogum Boogum Song” became a hit and ranked 34th and 19th on the Billboard’s Hot 100 and Top Selling R&B Singles charts, respectively. A few months later, Wood debuted his second hit, “Gimme Little Sign,” which peaked at No. 9 on Billboard’s Hot 100.