The '1234' singer said: "I can't believe I'm on the radar to this degree to even be considered.
"I don't feel that way. I remember the times I've played to 80 people in Nottingham and places, so I didn't know I was even known in Britain.
"Getting this nomination is a bit like being in high school, and getting asked at lunch time to sit at the table with all the kids who don't normally talk to you."
The Canadian admitted she may only have an outsider's chance of winning.
"The other people in the list [Alicia Keys, Bjork, Kylie and Rihanna] are as big as you can be, reputable, well-known, everything. I feel like a sneaky dark horse," she said.
Last week Feist revealed she feared becoming a one hit wonder after her track '1234' was used to accompany an iPod Nano commercial.
Her single 'My Moon My Man', from album The Reminder, is out now.