I'm Sorry is a major hit song from 1960 by the then 15-year-old American singer Brenda Lee. It was her first single to reach number one on the Billboard Hot 100 chart and is noted as one of the early examples of the "Nashville Sound"—a new Country Pop style that incorporated lush string arrangements and background vocals. Although her label, Decca Records, initially hesitated to release the track, fearing a teenager wasn't mature enough to sing about unrequited love, "I'm Sorry" became a smash h