Dano plays the legendary musician during his creative peak in the 1960s, and Cusack portrays Wilson in the 1980s as he emerged from years spent as a recluse, in the upcoming movie Love & Mercy.

Director/producer Pohlad was determined to reflect how Wilson had become "a different person" in the intervening years due to mental illness and drug addiction, so he kept the two lead actors apart from each other for the entire shoot.

He tells rock magazine Q, "I made sure Paul and John didn't meet until afterwards because I didn't want there to be any coordination in how they talked, stood or moved - the Brian of each era was almost a different person."