Retro Gretion was a Japanese rockabilly band that first formed in 1998. Originally called Retro Gression and influenced by The
Stray Cats, the group later changed their name to Retro Gretion and adopted some psychobilly influences, working with bands
like Battle of Ninjamanz and Abnormals. After releasing a few singles, EP’s and two albums, Retro Gretion ended up disbanding in
2005.