Stevie Nicks and Lindsey Buckingham seem to be teasing a project after posting coordinated Instagram updates with the lyrics to "Frozen Love." Days later, a billboard with their portrait popped up in Los Angeles with the date Sept.

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.

Wait, Stevie Nicks and Lindsey Buckingham had a band before Fleetwood Mac? With the band’s incredible success in the mid-1970s, many are likely unaware that Fleetwood Mac existed for nearly a decade before recruiting Nicks and Buckingham to their ranks.