Oliver Wang

It's tempting to describe the voices of Charles Bradley and

R&B singers Nicole Wray and Terri Walker both had promising starts to their careers more than ten years ago. Wray came up on the Virginia coast under the wing of mentor Missy Elliott. Walker, a Londoner, was classically trained yet released her debut on a Def Jam subsidiary. Both enjoyed early critical success but by decade's end struggled to find a wide audience. Instead, they found each other.

Bill Withers' very first single became a breakout hit in 1971. He would go on to record nine albums over the next 14 years, and all of them are now available on a new box set, The Complete Sussex and Columbia Masters.

Early synthesizers were supposed to imitate or re-create other existing sounds, but as anyone can tell you, they mostly sounded like synthesizers. That distinctive whine and wheeze captivated all manner of pop artists, from prog-rockers to classical composers to soul musicians. However, back then, synthesizers were so expensive and bulky, you needed a major-label budget and an entire studio wall to install them.

Few 20th century thinkers predicted the 21st century era of social media and the Internet better than Marshall McLuhan. Beginning in the 1960s, the Toronto-based philosopher and scholar began to theorize about how television and radio were changing society, creating what he termed the "global village."

Before the rise of Def Jam as hip-hop's definitive record label, there was Profile, which helped shepherd in some of the genre's early shifts in sound and style. A new two-CD anthology, Giant Single: The Profile Records Rap Anthology, chronicles the label's 15-year history and legacy.