In the midst of his 2015 tour, Jason Isbell has released a very special two-song EP of sorts with wife and acclaimed musician Amanda Shires. Entitled 'Sea Songs,' the digital-only release captures the two Americana icons covering Warren Zevon's timeless 'Mutineer' and Lykke Li's 'I Follow Rivers.' You can pick it up via iTunes here.

In addition to 'Sea Songs,' Isbell has unveiled a string of new tour dates that kick off in mid-April and wrap up on May 28 in Bristol, Tennessee. Isbell and his band, the 400 Unit, are planning on hitting the studio soon to begin work on the follow-up to 2013's 'Southeastern' -- perhaps they'll debut some new material on the road? Check out the tour dates below and keep your fingers crossed!

Jason Isbell and the 400 Unit Spring 2015 Tour
April 16 -- Chattanooga, Tenn. -- Track 29
April 17 -- Charlotte, N.C. -- U.S. National Whitewater Center
April 18 -- Columbia, S.C. --The Music Farm Columbia
May 13 -- Clearwater, Fla. -- Capitol Theatre
May 15 -- Orlando, Fla. -- Plaza Live
May 16 -- Atlanta, Ga. -- Shaky Boots
May 17 -- Wilmington, N.C. -- Greenfield Lake Amphitheater
May 19 – Long Island, N.Y. – The Space at Westbury
May 20 -- Port Chester, N.Y. -- The Capital Theatre
May 22 -- Albany, N.Y. -- The Egg
May 23 -- Cumberland, Md. -- Del Fest
May 24 -- Boston, Mass. -- Boston Calling
May 26 -- Rochester, N.Y. -- Water Street
May 27 -- Cleveland, Ohio -- House of Blues
May 28 -- Bristol, Tenn. -- Paramount Center for the Arts

Opening for Isbell on several of the dates will be Craig Finn. You can get the full itinerary with ticket information here.