Brenda Lee
Brenda Mae Tarpley (born December 11, 1944), known as Brenda Lee, is an American performer who sang rockabilly, pop and country music, and had 37 US chart hits during the 1960s, a number surpassed only by Elvis Presley, The Beatles, Ray Charles and Connie Francis. She is best known for her 1960 hit "I'm Sorry", and 1958's "Rockin' Around the Christmas Tree", a US holiday standard for more than 50 years.
source: Wikipedia