It’s fitting that Steve Miller and Gregg Allman — two legends of ’70s rock ’n’ roll — would meet up in the Carolinas. Allman’s new album, his first since 1997, is named Low Country Blues, an homage to his home 100 miles south of Charleston. Miller is soon to release Let Your Hair Down, a follow up to 2010’s Bingo!, his first collection since going on a hiatus 17 years ago. Despite parallel musical careers, Miller and Allman never met until they each performed at the Warren Haynes Christmas Jam last December in Asheville. After finding themselves on stage together, their respective managements looked at booking them as co-headliners. A six-show mini-tour was born, with Charleston selected as the first stop. “Look for some hot and heavy blues jams on these dates,” Miller’s site promises. Allman, on the other hand, recently diverged from “hot and heavy.” Produced by T-Bone Burnett, Low Country Blues varies between steady, J.J. Cale-esque rolling rambles and gritty, sparse, raw cuts like the haunting “Devil Got My Woman.” Allman recorded the obscure blues covers before his recent liver transplant. Its release is a fitting gift to himself to celebrate his recovery. As is the case with most everything Burnett touches, the album has received high praise from critics. Still, both artists are likely to introduce their new material while also drawing heavily from their catalog of hits. Where else can you hear “Midnight Rider” and “Jungle Love” by the men who wrote them without ever leaving your seat?