Gary Sinise took fans behind the scenes of Resurrection & Revival: Part 3, the latest collection of music from his late son, Mac Sinise.
“So, we started with Mac’s files again, and I discovered more music,” he said in an Instagram video. “Started with kind of a rock piece that I found that he…wrote for an industrial film, and when I discovered that it was actually his piece, that led me to another piece that I discovered that he played with a buddy and they were working on it awhile ago, and that led me to finding more files.”
Sinise said “a lot of these ideas just ended up being in” Mac’s files, adding, “So, what did I do? …I said we’re going to make some music out of it.”
In the caption, Sinise wrote, “What began with a single rock piece soon led to a treasure trove of unreleased music, including piano melodies Mac had recorded on an upright piano in his apartment. Like many musicians, he would capture ideas as they came to him, saving them for a future project.”
Related: Gary Sinise Expands Late Son’s Musical Legacy into Third Album
“Those melodies became the foundation for many of the songs featured on the album. With the help of talented musicians, producers and collaborators, Mac’s musical ideas were brought to life and transformed into the collection you hear today,” the caption concluded.
This is the third album Sinise has released that is made up of music from Mac, who passed away in 2024 after a battle with a rare form of cancer.
“Mac died on Jan. 5th, 2024, and actually the last year of his life was a pretty amazing year for him,” Sinise told Fox News in a 2025 interview. “I think he was feeling like things were closing in on him. It was a very, very difficult cancer, and there was no cure and none of the drugs were working, and he kept trying to try, but nothing was giving us any real hope. And so, I think he was very practical and very realistic about what was going on, and he had some music that he wanted to work on that he never finished.”
The FORREST GUMP actor continued, “The fact that Mac left all this beautiful music and that I discovered it, so much of it I hadn’t known about. He just wrote these things and kind of tucked them away…I thought there couldn’t possibly be more music after I did the second album. I found so many things, and it’s like Mac just built this treasure chest of beautiful melodies.”
Sinise will share more of Mac’s story in his upcoming book, Graceful Warrior, which will be published later this year.
“I really believe that, by sharing our story in this book, others who may be going through something difficult in their own lives may find hope and strength to help carry them through,” Sinise told PEOPLE.
Through the Resurrection & Revival series of albums, Sinise is continuing to share his son’s talent with the world.
Read Next: Gary Sinise Unveils Hidden Recordings and Final Album to Honor His Late Son
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