It was just announced by SiriusXM that Reprise Records will be releasing a four-CD box set of previously unreleased material by Tom Petty and the Heartbreakers this September 28, about a week before the anniversary of the legend’s passing.

The box set, titled An American Treasure, is the first posthumous release of the rocker, since his accidental overdose last October, when he was only 66. The collection will feature a stunning 60 “previously unreleased studio recordings, live recordings, deep cuts and alternate versions of popular Petty songs,” according to Rolling Stone.

The first single from the set is “Keep A Little Soul,” a previously unreleased recording from 1982 sessions that resulted in Tom Petty & The Heartbreakers’ 1982 album, Long After Dark.

According to the official website, Petty’s daughter Adria and his wife Dana were the catalysts of the creation of this box set, serving as the project’s Executive Producers to commission, create and release the collection. They worked together with Tom’s bandmates of 45 years, Heartbreakers Mike Campbell and Benmont Tench, and his studio collaborator, Ryan Ulyate, to curate the track list.

“Everyone involved in this project chose each track with tremendous care and deep respect for the body of work Tom Petty created over the course of 40 years,” said Adria and Dana. “He also accumulated a wealth of unreleased music in his vaults, and we have collectively uncovered one gem after another that will keep us all listening and discovering new facets of Tom’s talent for many years to come. We can’t wait to share with Tom’s fans this musical portrait of an artist who deeply affected our culture and indelibly touched the lives of fans the world over.”

Check out some details of the box set below.

An American Treasure Track List
CD 1
1. Surrender – Previously unreleased track from Tom Petty and the Heartbreakers sessions—1976
2. Listen To Her Heart – Live at Capitol Studios, Hollywood, CA—November 11, 1977
3. Anything That’s Rock ‘N’ Roll – Live at Capitol Studios, Hollywood, CA—November 11, 1977
4. When The Time Comes – Album track from You’re Gonna Get It!—May 2, 1978
5. You’re Gonna Get It – Alternate version featuring strings from You’re Gonna Get It! sessions—1978
6. Radio Promotion Spot – 1977
7. Rockin’ Around (With You) – Album track from Tom Petty and the Heartbreakers —November 9, 1976
8. Fooled Again (I Don’t Like It) – Alternate version from Tom Petty and the Heartbreakers—1976
9. Breakdown – Live at Capitol Studios, Hollywood, CA—November 11, 1977
10. The Wild One, Forever – Album track from Tom Petty and the Heartbreakers—November 9, 1976
11. No Second Thoughts – Album track from You’re Gonna Get It!—May 2, 1978
12. Here Comes My Girl – Alternate version from Damn The Torpedoes sessions—1979
13. What Are You Doing In My Life – Alternate version from Damn The Torpedoes sessions—1979
14. Louisiana Rain – Alternate version from Damn The Torpedoes sessions—1979
15. Lost In Your Eyes – Previously unreleased single from Mudcrutch sessions—1974

CD 2
1. Keep A Little Soul – Previously unreleased track from Long After Dark sessions—1982
2. Even The Losers -Live at Rochester Community War Memorial, Rochester, NY—1989
3. Keeping Me Alive – Previously unreleased track from Long After Dark sessions—1982
4. Don’t Treat Me Like A Stranger – B-side to UK single of “I Won’t Back Down”—April, 1989
5. The Apartment Song – Demo recording (with Stevie Nicks)—1984
6. Concert Intro – Live introduction by Kareem Abdul-Jabbar, The Forum, Inglewood, CA—June 28, 1981
7. King’s Road – Live at The Forum, Inglewood, CA—June 28, 1981
8. Clear The Aisles – Live concert announcement by Tom Petty, The Forum, Inglewood, CA—June 28, 1981
9. A Woman In Love (It’s Not Me) – Live at The Forum, Inglewood, CA—June 28, 1981
10. Straight Into Darkness – Alternate version from The Record Plant, Hollywood, CA—May 5, 1982
11. You Can Still Change Your Mind – Album track from Hard Promises—May 5, 1981
12. Rebels – Alternate version from Southern Accents sessions—1985
13. Deliver Me – Alternate version from Long After Dark sessions—1982
14. Alright For Now – Album track from Full Moon Fever—April 24, 1989
15. The Damage You’ve Done – Alternate version from Let Me Up (I’ve Had Enough) sessions—1987
16. The Best Of Everything – Alternate version from Southern Accents sessions—March 26, 1985
17. Walkin’ From The Fire – Previously unreleased track from Southern Accents sessions—March 1, 1984
18. King Of The Hill – Early take (with Roger McGuinn)—November 23, 1987

CD 3
1. I Won’t Back Down – Live at The Fillmore, San Francisco, CA—February 4, 1997
2. Gainesville – Previously unreleased track from Echo sessions—February 12, 1998
3. You And I Will Meet Again – Album track from Into The Great Wide Open—July 2, 1991
4. Into The Great Wide Open – Live at Oakland-Alameda County Coliseum Arena—November 24, 1991
5. Two Gunslingers – Live at The Beacon Theatre, New York, NY—May 25, 2013
6. Lonesome Dave – Previously unreleased track from Wildflowers sessions—July 23, 1993
7. To Find A Friend – Album track from Wildflowers—November 1, 1994
8. Crawling Back To You – Album track from Wildflowers—November 1, 1994
9. Wake Up Time – Previously unreleased track from early Wildflowers sessions—August 12, 1992
10. Grew Up Fast – Album track from Songs and Music from “She’s the One”—August 6, 1996
11. I Don’t Belong – Previously unreleased track from Echo sessions—December 3, 1998
12. Accused Of Love – Album track from Echo—April 13, 1999
13. Lonesome Sundown – Album track from Echo—April 13, 1999
14. Don’t Fade On Me – Previously unreleased track from Wildflowers—sessions—April 20, 1994

CD 4
1. You And Me – Clubhouse version—November 9, 2007
2. Have Love Will Travel – Album track from The Last DJ—October 8, 2002
3. Money Becomes King – Album track from The Last DJ—October 8, 2002
4. Bus To Tampa Bay – Previously unreleased track from Hypnotic Eye sessions—August 11, 2011
5. Saving Grace – Live at Malibu Performing Arts Center, Malibu, CA—June 16, 2006
6. Down South – Album track from Highway Companion—July 25, 2006
7. Southern Accents – Live at Stephen C. O’Connell Center, Gainesville, FL—September 21, 2006
8. Insider – Live (with Stevie Nicks) at O’Connell Center, Gainesville, FL—September 21, 2006
9. Two Men Talking – Previously unreleased track from Hypnotic Eye sessions—November 16, 2012
10. Fault Lines – Album track from Hypnotic Eye—July 29, 2014
11. Sins Of My Youth – Early take from Hypnotic Eye sessions—November 12, 2012
12. Good Enough – Alternate version from Mojo sessions—2012
13. Something Good Coming – Album track from Mojo—July 15, 2010
14. Save Your Water – Album track from Mudcrutch 2—May 20, 2016
15. Like A Diamond – Alternate version from The Last DJ sessions—2002
16. Hungry No More – Live at House of Blues, Boston, MA—June 15, 2016

Photo Credit: Boston Lynn Schulz