Since I have been on such an Old School kick, I might as well mention that I picked up the Whispers Greatest Hits the same day I got the Larry Graham boxed set. I have always been a big fan of the Solar Records sound that was big in the late 70's and early 80's. These albums feature the Sylvers brothers, Leon, Ricky, and Foster on bass. They were distinctive because they used picks plus flatwound strings on Rickenbackers, often with the mutes on. Later, I think they switched to roundwounds. Their playing features some killer groove playing, often using sixteenth notes. Check out the Whispers or other Solrar acts like Shalamar or Dynasty if you get the chance.