The Oakland-based pop-soul band Bells Atlas are gearing up to drop a standalone single, “Spec and Bubble.” Attempting to neatly describe the sounds that Derek Barber (guitar) Geneva Harrison (drums, percussion, keys) Sandra Lawson-Ndu (vocals, percussion, keys) and Doug Stuart (bass, vocals, keys) produce together is no easy task. Kaleidoscopic and richly layered, each new foray by the band expands the wide, colorful sonic palette from which they paint dazzling, vibrant structures from.