Jackie Day was an American soul singer prominent in the mid-20th century, known for her emotive vocal style and contribution to the R&B genre. She is best remembered for her hit single "Before It's Too Late" and the Northern Soul classic "Naughty Boy". Although her discography is not extensive, Day's powerful voice and unique interpretation of soul music left an indelible impact on the genre. Her influence can be felt in the work of many soul and R&B artists who followed in her footsteps.