Julio Iglesias (born Julio José Iglesias de la Cueva; September 23, 1943) is a Spanish singer and songwriter whose romantic image, magnetic stage presence, and expressive music made him one of the best-selling artists of all time. By the early 21st century he had sold hundreds of millions of albums in more than a dozen languages. He has sold over 300 million records worldwide in 14 languages and released 77 albums. According to Sony Music Entertainment, he is one of the top 15 best-selling music artists in history. While Iglesias rose to international prominence in the 1970s and 1980s as a performer of romantic ballads, his success has continued on as he entered new musical endeavors. He is the father of singer Enrique Iglesias.

Iglesias was born in Madrid, the eldest son of Dr. Julio Iglesias Puga and María del Rosario de la Cueva y Perignat. Iglesias' father's family was from Galicia, and Iglesias' mother an Andalusian.

In the 1960s, he studied law in Madrid and was a goalkeeper for one of Real Madrid's football teams. On September 22, 1963, he was involved in a car crash, resulting in an injury to his spinal cord. He said, "I had a car accident; [a] very, very strange car accident...I lost control of the car and rolled it, resulting in what they call 'paraparexia,' which is not paraplegia. It's a compression in the [spinal] cord, in the sense of the neck...my spinal cord; and I was very, very ill for three years."  His doctors thought he would never walk again; indeed, his legs were left permanently weakened, and they continued to require therapy as of late October 2010. However, slowly, he began recovering his health. To develop and increase the dexterity of his hands, he began playing guitar. When he recovered from his accident, he resumed academic studies and traveled to the United Kingdom to study the English language, first in Ramsgate, then at Bell Educational Trust's Language School in Cambridge.

Elvis Aaron Presley (January 8, 1935 – August 16, 1977) was one of the most popular American singers of the 20th century. A cultural icon, he is widely known by the single name Elvis. He is often referred to as the "King of Rock and Roll" or simply "the King".

Born in Tupelo, Mississippi, Presley moved to Memphis, Tennessee, with his family at the age of 13. He began his career there in 1954, working with Sun Records owner Sam Phillips, who wanted to bring the sound of African American music to a wider audience. Accompanied by guitarist Scotty Moore and bassist Bill Black, Presley was the most important popularizer of rockabilly, an uptempo, backbeat-driven fusion of country and rhythm and blues. RCA Victor acquired his contract in a deal arranged by Colonel Tom Parker, who would manage the singer for over two decades. Presley's first RCA single, "Heartbreak Hotel", released in January 1956, was a number one hit. He became the leading figure of the newly popular sound of rock and roll with a series of network television appearances and chart-topping records. His energized interpretations of songs, many from African American sources, and his uninhibited performance style made him enormously popular—and controversial. In November 1956, he made his film debut in Love Me Tender.