This installment of "Jump Blues in Ab" is composed almost entirely of a single, double stop figure with a ¼ tone bend. You fret it with fingers 2 and 3. The notes are from the top two strings in pattern 3 for the Ab pentatonic minor scale...
Another performance of "Further On Up the Road," by Eric Clapton - this time with Robbie Robertson and the Band. Thanks to John Peterson for pointing it out.
2/24 was Johnny Winter's 70th birthday. Here he is, burning up the stage with his famous slide guitar rendition of Dylan's "Highway 61 Revisited." Notice Steve Cropper on guitar right behind Johnny.