Watch the Let the Wine Talk online guitar lesson by BJ Baartmans from Creative Slide Guidebook
This track is titled "Let the Wine Talk", somewhat reminiscent of "I Heard It Through the Grapevine". I love those late 60's grooves, and songs that are based on a riff can be really cool.
One of the most important slide players for me is Ry Cooder. I'd love to quote him here: "Go where it's dangerous and say yes. There's a lot of crazy wild stuff you can do with a slide. Once you got the basics down, that is."