James Blunt's mum has grumbled about the inverse snobbery her son faces because of his privileged background.
Jane Blount said her son was the subject of "harsh criticism" from UK critics simply because of his upbringing.
The You're Beautiful singer was educated at two independent schools, including Harrow School, and after graduating from an army-sponsored university place, served as a captain in the Life Guards.
His mother contacted BBC Radio 4's Today programme after a feature about the number of chart stars who have been to fee-paying schools, including Lily Allen, Chris Martin and Mumford And Sons.
Record producer Pete Waterman had suggested during the show that a privileged education made it difficult for performers to connect with large sections of their potential audience.
"I find it very difficult for somebody to tell me how our life is if they've been to a private school," he said.
James' mum said Waterman's attitude was "reflected by most of the critics in the UK".
"My son James Blunt, who is hugely appreciated worldwide, receives harsh criticism and we have rather sadly become aware that it's because of his background," she said in an email to the show today.
Presenter Evan Davis told listeners: "We're very pleased that Mrs Blount listens to the programme."