"I think it's a crime," said the Brit Awards chairman Ged Doherty, who is also head of Boyle's record company, Sony.
"I can't explain it. Every year there is something the academy gets wrong and this year they got that wrong."
"The academy" is made up of a panel of more than 1,000 people from the music industry and media.
They're looking for just two things: commercial success and artistic talent.
It's unbelievable that the "academy" could leave Susan out. Just look at the commercial success she's enjoyed.
- Fastest-selling debut album in UK history
- Best-selling UK album of 2009
- First UK artist (since the Fine Young Cannibals in 1989) to grab the Number 1 spot for six weeks in the U.S.
Susan has clearly been dismissed as "just" a TV talent show contestant