Definitely pick up the Allman Bros. As mentioned, "Live at the Fillmore" and "Eat a Peach" and their latest "Hittin' the Note" are absolutely essential and mandatory for Southern Jazz/Blues/Rock. Also necessary; "Beginnings", "Idewild South" and "Shades of two Worlds." I saw these guys in 1970 with Duane and original bassist Berry Oakley. Weird and strange, Duane was killed on his bike in 1971. And a year later, a mile from where Duane died, Berry was killed on his bike. Since that first time I saw them, they have been my all-time favorite band. Every summer they come to Pittsburgh and it's a great fuckin' ritual to go as often as I can. Another excellent band is Govt.Mule. The guitarist Warren Haynes also plays guitar with the Allman Bros. Check out guitarist Derek Trucks(plays with the Allmans) and has his own band.His approach is coming from the Jazz side. Beautiful slide player, like Duane re-incarnated.