In the new documentary Billy Joel: And So It Goes, the Piano Man singer admitted that there was “bad blood” between himself and Sir Elton after an interview the latter gave to Rolling Stone in 2011, opening up about how past joint tours of theirs had to be cancelled due to “illnesses and various other things” including the former’s “alcoholism”.

Billy Joel is opening up about a tough moment with longtime friend and tourmate Elton John. In the second part of the new two-part HBO Documentary, "Billy Joel: And So It Goes," the "New York State of Mind" singer shared how John's public comments that he needed rehab strained their friendship.