Death of a musical prodigy
She says Emerson had been hurt by comments online mocking his playing, and was "tormented with worry" about an upcoming tour in Japan.
"He didn't want to let down his fans. He was a perfectionist and the thought he wouldn't play perfectly made him depressed, nervous and anxious," she told the Daily Mail.
"He read all the criticism online and was a sensitive soul. Last year he played concerts and people posted mean comments such as, 'I wish he would stop playing'," she added.
Mari Kawaguchi found the 71-years-old keybordist and founding member of Emerson, Lake & Palmer dead of self-inflicted gunshot wound to the head on Friday (March 11) in the apartment the couple shared in Los Angeles.