I am good friends with a singing duo named The Red Wine Effect (www.redwineeffect.com). Along with their backup singers and musicians, their sound is simply marvelous (well worth the drive north - I should know, I have driven to Nashville to listen to them countless times!).
Amber Falls Winery is located in the back country of Tennessee, just west of Hampshire (don't trust maps on yahoo! and google). Better directions will be provided, if necessary.
The winery is approximately two hours from Huntsville - so a departure time around 4:00 is recommended, with a return ETA of 11:00 PM. I am interested in carpooling since the trip will not be an overnight for me (I do plan to geocache on the drive up if there are no passengers, meaning an earlier departure time).
Well worth the time and gas money!