Johnny and June Forever, a tribute to Johnny Cash and June Carter — the greatest love story ever told, perform on stage at Sierra Theatre in Susanville, Ca

Chemistry is an interesting thing. There are those moments in time, like when you are watching some musical act on the stage, where you discover that you can’t take your eyes off the music makers before you.

Essence Goldman and Danny Uzilevsky will premiere their “Johnny & June Forever” show on Oct. 4 at the Sweetwater Music Hall as part of the Mill Valley Film Festival.