Gregg Allman has rescheduled his appearance on the The Colbert Report. The Allman Brothers Band leader will now appear on The Colbert Report this evening. Allman postponed his original appearance on the talk show last month due to health concerns. The program will air on Comedy Central at 11:30pm ET this evening. The Allman Brothers Band will kick off a summer tour at Thornville, OH’s All Good Festival on July 21. For an exclusive excerpt from Allman’s new book, be sure to order the new issue of Relix.