Ringo Starr is reflecting on 37 years of sobriety. In an interview with reporters at Ringo Starr’s Annual “Peace & Love” Birthday Celebration in Beverly Hills, Calif., the former Beatles drummer opened up about how his life has shifted in the years since he stopped drinking alcohol.

Starr said he gave “extensive notes” to director Mendes while fact-checking the scripts. The scenes in particular that depicted Starr’s family and his first wife, Maureen Starkey Tigrett (whose casting has not yet been announced), were among the sequences that Starr urged to have reworked.