12:32 PM PT -- 7/15 -- A rep for the band tells TMZ ... "Heavy hearts cannot begin to describe the feeling of losing our brother Jeff. The bond between us over decades of creating music and touring the world is something that we as a band uniquely shared."
The rep added, "Those memories with Jeff will be forever alive in our hearts. It’s unimaginable that one of our band brothers has left us. We’re sending his wife Debinique, his son Sebastian, family, and friends our deepest condolences. Jeff’s memory and music will be with us forever."
Legendary guitarist Jeff LaBar, famous for playing in the rock band "Cinderella," has died.
Jeff's first wife, Gaile LaBar-Bernhardt, tells TMZ ... Jeff was found dead Wednesday inside his apartment in Nashville.
We're told Jeff had gone off the grid the past few days, with friends and family unable to reach him, so his ex-wife went to go check on him ... and that's when she found him dead.
The cause of death remains unclear.
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Jeff's son, Sebastian, who he shares with Gaile, is remembering his late father as his hero and idol ... and he shared some photos of all the fun times they had.
Cinderella was one of the biggest hard rock bands in the 1980s, famous for their big hair and smash hits “Nobody’s Fool” and “Don’t Know What You Got (Till It’s Gone)” ... the band’s biggest Billboard hit. Jeff replaced the band's OG guitarist Michael Schermick.
Jeff also launched a solo career, releasing one record called "One For The Road" ... and he also played in a smaller band with his Cinderella bandmate, Eric Brittingham, the "Naked Beggars."