Here's a must read article on Marvin Gaye's legendary album What's Going On http://performingsongwriter.com/marvin-gaye-whats-going-on/?fbclid=IwAR0_C2z_6i8ErE8ceyYI8dRkfNY2hgpx_9v7w5xXCaEJLBhTGfMalyq0bBk Also for Marvin Gaye-ologist read this book - Divided Soul https://www.amazon.com/Divided-Soul-Life-Marvin-Gaye/dp/030681191X/ref=sr_1_1?crid=3200V8O5COHF4&keywords=divided+soul+the+life+of+marvin+gaye&qid=1560657140&s=gateway&sprefix=divided+soul%2Caps%2C137&sr=8-1