Jewel has been criticised for her rendition of The Star-Spangled Banner over the weekend, with some people suggesting that her version was not traditional enough.
The singer-songwriter, 49, performed the national anthem for the crowd on Sunday (May 28) at motoring race Indy 500, which was held at Indianapolis Motor Speedway.
Her rendition of the song at the annual event in Indiana on Memorial Day weekend was slower than it's traditionally performed and it has been described as "soulful".