Moody Blues music never gets old. When I started getting into bluegrass some years ago, I picked up the "Moody Bluegrass" cd. It's actually quite good. But the best is the "Late Lament" with a southern accent!
I love the mandolin - it really gives it character!
You will find this at the end of this rather long Nights in White Satin / Late Lament.
http://www.youtube.com/watch?v=26eBZ8tZ018
JP