After a few months of teaser images, the wait is finally over. You can watch Meryl Streep in action as a rock goddess in the first trailer for Ricki and the Flash, the new film from screenwriter Diablo Cody and director Jonathan Demme. Not long ago, we learned that Streep had seriously committed herself to learning to play the guitar (of course she did — she’s Meryl F—ing Streep) for the film, and it seems that her hard work paid off.

Ricki and the Flash looks wonderful, and Streep’s voice sounds amazing — she’s equal parts Stevie Nicks and Bonnie Raitt, really owning that rock goddess persona. Even her speaking voice is throatier than normal, likely the result of Ricki’s years of hard living on the road.

The film centers on Ricki, an aging rock star who abandoned her family to pursue her dreams. Years later, her daughter (played by Streep’s real daughter, Mamie Gummer) is getting married, so Ricki returns home to reunite with the family she left behind, opening old wounds in an attempt to mend them.

Kevin Kline plays Ricki’s ex-husband, with real-life rocker Rick Springfield (yes, that Rick Springfield) as one of Ricki’s band members who also happens to be in love with her.

Three-time Academy Award® winner Meryl Streep goes electric and takes on a whole new gig – a hard-rocking singer/guitarist – for Oscar®-winning director Jonathan Demme and Academy Award®-winning screenwriter Diablo Cody in the uplifting comedy Ricki and the Flash. In a film loaded with music and live performance, Streep stars as Ricki, a guitar heroine who gave up everything for her dream of rock-and-roll stardom, but is now returning home to make things right with her family. Streep stars opposite her real-life daughter Mamie Gummer, who plays her fictional daughter; Rick Springfield, who takes on the role of a Flash member in love with Ricki; and Kevin Kline, who portrays Ricki’s long-suffering ex-husband.

Ricki and the Flash also stars Sebastian Stan and Audra McDonald, and arrives on August 7.