The sound of Stevie Nicks and Lindsey Buckingham’s voices might be back to haunt fans as the Fleetwood Mac stars tease what’s hoped to be a reunion. On Thursday, both the “Gypsy” crooner, 77, and the 75-year-old guitarist posted apparent call and response messages on Instagram.

Stevie Nicks and Lindsey Buckingham seem to be leaving a trail of clues leading up to what many believe will be a reissue of their 1973 album "Buckingham Nicks."

In addition to Nicks and Buckingham posting back-to-back song lyrics, a billboard recently appeared above Sunset Boulevard in Los Angeles teasing a reissue of their first joint album, Buckingham Nicks, initially released in 1973. The sign included the album's original cover and a possible release date: September 19.