Billy Joel and Elton John’s friendship was strained by a public dispute during the 1990s and early 2000s, with alcohol misuse and blunt criticism worsening tensions. The feud mattered because the pair were prominent collaborators whose joint touring had been hugely successful, making their falling-out highly visible.

John reportedly urged Joel to seek treatment for drinking, comments Joel later said hurt him deeply, while Joel also criticised John’s management and behaviour around their tours. Despite periods of bad blood, the musicians eventually repaired their relationship and continued to acknowledge one another’s musical achievements.