Dan Selzer mentioned them a few weeks back, but it doesn't hurt to do it again...
Gina Birch has a wonderful duet with Robet Lloyd on the new Nightingales CD Out Of True. The song's called Black Country, and yes, as the name implies, it's a country song.
Out of True is available digitally through iTunes, Napster and the rest but they're currently seeking a US label to license it for physical distro purposes, and are seeking to do a mini tour of the US revolving around SXSW.