Ayumi Hamasaki and her 16th number 1 single. It came out on July 9, 2003. "&" was a triple A-side single and also featured the theme to A-Nation 2003, which Ayu sang. "&" also featured the three songs "ourselves", "Greatful Days", "Hanabi -episode 2-. The single debuted at the number one spot for the daily, weekly and monthly Japanese charts and went on to sell almost 600,000 copies.