Sir Elton Hercules John CH CBE (born Reginald Kenneth Dwight; 25 March 1947) is an English singer, songwriter, pianist, and composer. He has worked with lyricist Bernie Taupin since 1967; they have collaborated on more than 30 albums. John has sold more than 300 million records, making him one of the world's best-selling music artists. He has more than fifty Top 40 hits, as well as seven consecutive number-one albums in the United States, 58 Billboard Top 40 singles, 27 Top 10 singles, four of which peaked at number two and nine of which reached number one. His tribute single "Candle in the Wind 1997", rewritten in dedication to Diana, Princess of Wales, sold over 33 million copies worldwide and is the best-selling single in the history of the UK and US singles charts. He has also produced records and occasionally acted in films. John owned Watford F.C. from 1976 to 1987 and from 1997 to 2002, and is an honorary life president of the club.

Blake Tollison Shelton (born June 18, 1976) is an American country music singer and television personality. In 2001, he made his debut with the single "Austin". The lead-off single from his self-titled debut album, "Austin" spent five weeks at number one on the Billboard Hot Country Songs chart. The now Platinum-certified debut album also produced two more top 20 entries ("All Over Me" and "Ol' Red").