Billy, 76, revealed in his documentary Billy Joel: And So It Goes, which aired its second part on Friday, that he was ‘really hurt’ by comments made by Sir Elton. The duo had been on their Face to Face tour, which they kicked off in 1994,when Sir Elton addressed several cancellations in an interview with Rolling Stone.

In the second installment of the new two-part HBO documentary Billy Joel: And So It Goes, the five-time Grammy winner revealed that he was really hurt after John claimed that he should go back to rehab to seek treatment for his drinking in a 2011 Rolling Stone cover story .