1. ‘Let’s Get It On’ by Marvin Gaye
Not many artists could have claimed as many potential positions on this list as Marvin Gaye, who made a steady sideline in ministering sexual healing. But arguably, this indelible 1973 ballad started the ball rolling, turning a page from the social consciousness of ‘What’s Going On’ to more carnal concerns. Fact: There is no sexier guitar lick in existence than the one that starts this tune.