Helen Reddy's ex-husband Jeff Wald has spoken out following the Australian singer's death on Tuesday at the age of 78.Wald released a statement on Twitter shortly after it was announced the I Am Woman singer had died following a battle with dementia. 'I am very sad to announce that my first wife of 18 years and the mother of my two oldest Traci and Jordan has died,' he tweeted.Scroll down for video  'Traci spent the morning with Helen and she passed soon after under the excellent care of the Motion and Television Home,' he added. The 76-year-old producer was married to Reddy from 1966 until 1983, and their often tumultuous relationship was documented in this year's biopic I Am Woman.Australian actress Tilda Cobham-Hervey portrays Reddy in the film, which follows her rise to fame in the 1970s, while American actor Evan Peters plays Wald.  Reddy died in Los Angeles on Tuesday afternoon, five years after she was diagnosed with dementia.In addition to her feminist anthem I Am Woman, th ...