Jamerson and Marvin Gaye isolated tracks from Heard It Through The Grapevine
Here is a mix of just the vocals and the bass from "Heard It Through The Grapevine". There are a lot of these individual tracks floating around the internet these days. I combined just the vox and bass from a set of the 8 different I grabbed off the net that also included the drums, organ, and strings.
When you hear just the bass and the vocals together it is 4 minutes of solo ridiculoso of the highest order. That's some feel right there.