Merle Haggard left an indelible mark on country music, but while the singer is gone, having died on April 6, this doesn’t mean the world will stop hearing his music.

Last year, Haggard spoke with Broadway’s Electric Barnyard and revealed that he had “probably 300, 400 songs that I haven’t released that I’ve collected over the years.”

“We call it ‘the archive,’ and we haven’t released anything from that,” Haggard explained. “When I get unable to record or sing anymore or get killed or something, well, they’ll probably put it out.”

Haggard’s most recent release was last year’s collaboration with Willie Nelson called "Django and Jimmie." No word on when songs from “the archive” will make their way to a release date.

Haggard passed away on April 6, 2016, his 79th birthday, after a series of health struggles. Since his death last week, several artists have paid tribute to the legend including George StraitJake Owen and Tim McGraw.

Haggard’s son, Ben, said that his father predicted he would die on his birthday.

“A week ago dad told us he was gonna pass on his birthday, and he wasn’t wrong,” Ben wrote on Facebook. “A hour ago he took his last breath surrounded by family and friends.”

“He loved everything about life and he loved that everyone of you gave him a chance with his music. He wasn’t just a country singer,” added the singer’s son, “He was the best country singer that ever lived.”

Merle Haggard Dead at 79