At 3:46 in this video lesson, Ted Greene does this cool borrowed chord/expanded key line with a low E string pedal drone. Sambo transcribed it at the Ted Greene forum and I created the tab for it below. Ignore the time signature, it was done to allow the low E note to drone over the entire line. Click image to expand.
1st phrase: E/A -> D/G -> A/D -> G/C (melody: G# -> F# -> C# -> B)
2nd phrase: C/F -> B/E -> E/A -> D/G (melody: E -> D# -> G# -> F#)
3rd phrase: G/C -> E/A -> C/F -> B/E (melody: B-> G# -> E -> D#)