Best "one-on-one" recordings... one voice and...

This is the best I could find from my collection, and not true to the rules
of the thread, but excellent nonetheless...acoustic guitar and vocal (Lyle
Lovett) and electric guitar (Dean Parks) on "Promises" from
Lyle's "The Road to Ensenada" CD. Until I went to look up
the song title just now, I had always thought it was Lyle solo with
acoustic guitar.

Eva Cassidy - "Tall Trees In Georgia"
Greg Lake - "Lucky Man" and "Still You Turn Me On" from "Welcome Back My Friends To The Show That Never Ends"

I know this is an old post but I have been listening to Colin Haye for months and can't get it out of my head. He is the former singer from Men at Work in the 80's. I never cared for them then but this album is stuck on me. Just him and an acoustic guitar.

This is a slight cheat on the subject, but I find it an incredible recording:

Open Fire, Two Guitars - Johnny Mathis

http://www.amazon.com/Open-Fire-Guitars-Johnny-Mathis/dp/B00000JBDS/sr=1-11/qid=1161198269/ref=sr_1_11/104-3486952-3375107?ie=UTF8&s=music

Vincent Black Lightning - Richard Thompson