Hayley Mills is an English actress and singer who gained prominence in the 1960s. Known for her bright, effervescent pop sound, her music career was largely tied to her acting work in Disney films, leading to her most notable single, "Let's Get Together" from the 1961 film "The Parent Trap". Despite not being a prolific singer, Mills' music carries a significant nostalgic value, capturing the wholesome, light-hearted spirit of her era in Disney's history.