Country music legend Johnny Cash is reportedly in serious but stable condition in a Nashville hospital with pneumonia.

Cash, 68, was admitted Sunday morning to Baptist Hospital, a spokesperson there told Associated Press.

Cash has a long history of pneumonia and said he nearly died of it in the fall of 1998. "The Man In Black" spent two weeks in a hospital with pneumonia in 1999.

If Cash is bedridden for more than 10 days, he will miss next week's Grammy Awards, where he is nominated for Male Vocal Country Performance for "Solitary Man" and Contemporary Folk Album for the Rick Rubin-produced American III: Solitary Man. Cash covers Tom Petty's "I Won't Back Down," Nick Cave's "The Mercy Seat" and U2's "One" on the album.

Cash has won eight Grammys in his career and was inducted into the Rock and Roll Hall of Fame in 1992. He has penned several classic tunes, including "Folsom Prison Blues," "A Boy Named Sue" and "Ring Of Fire."

In 1997, Cash was diagnosed with Shy-Drager's Syndrome, a disorder that causes progressive failure of the nervous system. He was told he might only live one year. Two years later, he learned that he was misdiagnosed.

Cash, however, still feels frequent pain from a broken jawbone and subsequent infection he suffered years ago. He also has a diabetes-related ailment that requires monitoring.