Bad Wolves is planning to release a cover of The Cranberries' 1994 hit "Zombie," and O'Riordan had wanted to add her own vocals to the track as a seal of approval.
"We have always had deep respect for her as an artist and a vocalist and she was never afraid to bare her soul in her music and lyrics," Bad Wolves frontman Tommy Vext said Monday in a statement.
"When we heard she liked our version and wanted to sing on it, it was the greatest compliment a new band, or any band for that matter, could have received."
Bad Wolves had apparently turned in its debut album to record company Eleven Seven Music when label CEO Allen Kovac, who managed The Cranberries for many years, sent the cover to O'Riordan, according to Blabbermouth.
O'Riordan liked the metal band's version and offered to add some of her own vocals to it. The band agreed and the session was supposed to take place Tuesday.
"I was excited to once again be a part of the magic she was able to create," Kovac said. "My heart goes out to her children. I hope they can find some peace despite this tragic event."
Vext said the band hopes to "still make [O'Riordan] proud" by releasing its version of the song this year.
While The Cranberries had confirmed O'Riordan's passing, as of early Monday afternoon, no further information was available as to what caused the 46-year-old singer's passing.
The Cranberries released their Something Else in early 2017 of reimagined songs from the band's catalog and new music.
"It was our 25th anniversary, so we thought it'd be nice to do something special for the fans," O'Riordan told Q104.3 New York's "Out of the Box" with Jonathan Clarke last March.
"So we thought that we'd take a lot of the songs out of our setlist and take our hits and re-record them with a [string] quartet. So that's what we did."
Cranberries were set to tour the Europe, the U.K. and the U.S. last spring and summer, but had to cancel many of the dates due to health problem O'Riordan was having.
The band said publicly at the time that the issues stemmed from a back problem the singer was having, which also prevented her from performing.
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