Grace Potter’s jaw-dropping secret has nothing to do with her recent career achievements — things like a track called “Something That I Want” in the Disney movie “Tangled”; “You and Tequila,” a duet with Kenny Chesney on his latest record, and her bluesy breakthrough single “Paris (Ooh La La),” from her third Hollywood Records recording with her backing band The Nocturnals.
What she’s been hiding is better than all of those successes combined.
The gravelly R&B belter — who hits town Saturday — has an entire finished solo album titled “Medicine” on the back burner, awaiting release.
It was produced by T Bone Burnett, one of the most renowned names in the business. “And it. Is. Amazing!” says Potter, who completed the disc a year ago.
“It’s a pretty wild thing to have such an amazing producer and to have this incredible record, just sitting there. I can’t remember the track order, because I actually, on purpose, haven’t listened to it — I want to be surprised and thrilled when it does come out some day.”
Two songs, “Paris” and “Medicine,” appear in different versions on both albums. But Potter promises more experimental sounds from her Jim Keltner-Marc Ribot-Dennis Crouch-backed Burnett sessions.
For example, there’s “Losing You,” which she calls “this weird Sly-and-the-Family-Stone-on-even-more-acid kind of country shuffle,” and another song written with David Poe called “Before the Sky Falls.”
“I learned the whole art of being in the studio from T Bone. He’s never, ever contrived in what he’s doing — it has to feel right, and if it doesn’t, he just steps away and lets the song breathe. He’s just a magician, basically.”
How did Potter wind up releasing a Mark Batson-helmed band effort instead? In 2009, The Nocturnals virtually disbanded, with one pending commitment, the VH1 documentary “Woodstock: Now and Then.”
Potter (who was raised on an artsy Vermont compound her parents dubbed Potterville) was already working on solo material when she hastily auditioned bassist Catherine Popper and guitarist Benny Yurco for film nuggets such as “White Rabbit.”
Along with remaining axman Scott Tournet and Potter’s drummer-boyfriend Matt Burr, the new lineup clicked.
It clicked so well that “Medicine” got scratched temporarily.
“So the record that we put out, which was completed after the T Bone record, was definitely the one that we needed to release at this point in my career,” Potter says. “So obviously, we had some fish to fry before I put out that solo album.”
IF YOU GO
Grace Potter & The Nocturnals
Where: The Fillmore, 1805 Geary Blvd., San Francisco
When: 8 p.m. Saturday
Contact: (415) 371-5500; www.livenation.com