The outing is scheduled to launch April 11 with a two-night stand in Harris, MI, according to Jennings' website, which lists about 15 US shows from coast-to-coast through mid-August. The itinerary is included below.

The hard-touring Charlie Daniels Band also has dates scheduled in between and on either side of Volunteer Jam. Those can be found at Daniels' website.

The veteran performer, who is set to be inducted into the Grand Ole Opry Jan. 19, is supporting his latest album, "Deuces," which surfaced in October. The record features Daniels performing duets of his own hits as well as country, pop and R&B classics with stars including Brad Paisley, Travis Tritt, Vince Gill and Dolly Parton.

Jennings, also known for his relentless touring ethic, is currently spending time at home with his newborn daughter but expects to be back on the road next month. He is supporting his third album, "The Wolf," which hit the streets in October and debuted at No. 52 on The Billboard 200.

Veteran Southern rockers .38 Special also have their own dates scheduled around Volunteer Jam as they continue to tour their hits and support their latest set, 2004's "Drivetrain." The band's full schedule is listed at its website.

Daniels started Volunteer Jam in 1974 to record "Fire on the Mountain" in front of a live audience. The performer's friends joined in for a jam at that Nashville concert and the rest is history.

September saw the release of the "Volunteer Jam" DVD, which captures the classic Charlie Daniels Band lineup performing a 1975 concert featuring guest appearances by Dickey Betts and Chuck Leavell of the Allman Brothers Band, Jimmy Hall from Wet Willie, Dru Lombar from Grinderswitch and the Marshall Tucker Band. Bonus features include a 2007 interview with Daniels.