Blonde, the official follow-up to Frank Ocean’s instant-classic debut album Channel Orange, finally made its grand debut Saturday night, putting an end to four years of feverish anticipation fueled by rumors, missed deadlines, and its author’s general absence from the public eye. Ocean’s scattered, less-is-more approach to promotion amplified the already deafening hype by several magnitudes, until the expectations for this album rose to almost unscalable heights — almost. When an artist of Ocean’s magnitude delivers new music, it’s often graded on a curve, bolstered by hysteria and brand familiarity, so that a body of work is received with rhapsodic praise by critics and fans even if it’s merely OK.