Burt Freeman Bacharach was an American composer, songwriter, record producer, and pianist who is widely regarded as one of the most important and influential figures of 20th-century popular music. Starting in the 1950s, he composed hundreds of pop songs, many in collaboration with lyricist Hal David. Bacharach's music is characterized by unusual chord progressions and time signature changes, influenced by his background in jazz, and uncommon selections of instruments for small orchestras. He arranged, conducted, and produced much of his recorded output.

Mary Isobel Catherine Bernadette O'Brien, better known by her stage name Dusty Springfield, was an English singer. With her distinctive mezzo-soprano sound, she was a popular singer of blue-eyed soul, pop and dramatic ballads, with French chanson, country, and jazz in her repertoire. During her 1960s peak, she ranked among the most successful British female performers on both sides of the Atlantic. Her image – marked by a peroxide blonde bouffant/beehive hairstyle, heavy makeup and evening gowns, as well as stylised, gestural performances – made her an icon of the Swinging Sixties.