I Put a Spell on You is the 1965 album by Nina Simone, and features some of her best known songs. "I Put a Spell on You" is a song originally by Screamin' Jay Hawkins. The original version gave the song an ironic theme, but Simone transformed it into a thrilling love song, complete with horns and strings. It had become one of her most well-known songs. Nina Simone was an American singer, songwriter, pianist, arranger, and civil rights activist who worked in a broad range of musical styles including classical, jazz, blues, folk, R&B, gospel, and pop. Simone's musical style fused gospel and pop with classical music, in particular Johann Sebastian Bach, and accompanied expressive, jazz-like singing in her contralto voice.