Multiple news outlets are reporting that Williams, who recorded 18 Gold and three Platinum-certified albums, died after a year-long battle with bladder cancer. Reports indicate that the legendary singer passed away at his home in Branson, Mo., where he owns the Moon River Theatre. "Moon River" was one of Williams' signature songs.
During the 1960s, Williams became one of the most popular vocalists in the country and at one time had earned more gold albums than any solo performer except Frank Sinatra, Johnny Mathis and Elvis Presley.
Williams, who also had a residence in La Quinta, Calif., is survived by his wife Debbie and his three children, Robert, Noelle and Christian from his first marriage.
In lieu of flowers, the family asks that donations be made to the Bladder Cancer Advocacy Network, according to USA Today.