Country singer-songwriter Mac Davis had his start in the music industry when he worked as an employee of Nancy Sinatra's company, and worked his way to become a songwriter for the legendary Elvis Presley. 

While writing for Elvis, he came up with "A Little Less Conversation", "Memories", and "Don't Cry Daddy". He also worked with Kenny Rogers and Vikki Carr.

Country Singer-Songwriter Mac Davis 'Critically Ill' After Surgery

The news of Mac Davis' condition came up after his family tweeted a message on his personal account, stating:

"We are sorry to report that legendary singer/songwriter Mac Davis is critically ill following heart surgery in Nashville. Your love and prayers will be deeply appreciated at this time."

Country icon Dolly Parton reacted to the shocking news by re-posting the Tweet and adding, #PrayforMacDavis. Davis most recently appeared in the Netflix series Dolly Parton's Heartstrings last year.

Aside from his songwriting career, Davis also found success as a singer himself, as well as acting. His hit songs include "Baby Don't Get Hooked on Me" and "Naughty Girl". 

Mac Davis and his wife Lise Gerard at the 63rd Annual BMI Country Awards

Davis was not only inducted into the Nashville Songwriters Hall of Fame in 2000, but also received a star on the Hollywood Walk of Fame in 1998. 

We wish a speedy recovery for country legend, Mac Davis!