Please name that tune/riff. Mark Adams, Buddy Hankerson, Steve Washington?

[iconic]

Ok,

yes I know the guy sounds like the 'Fast Shows' weather girls other half (Portugese, I know it's not spanish?)

.....but just what is the tune at the start of this video....played over an E......I know the tune, I'm 99.999% sure I do, I'm thinking it's groove from possibly a Slave Mark Adams track, something from that era...maybe a Buddy Hankerson riff, and I know Steve Washington could handle a bass well too?

[media]http://www.youtube.com/watch?v=8P4hO5l8XjM[/media]

put me out of my pain, it's been bugging me for days now!

over an E, could even be Larry Graham...?