After several showings at film festivals in Canada, Robbie Robertson brought his new documentary, Once Were Brothers: Robbie Robertson and The Band, to the Ray Kurtzman Theater in Los Angeles for a special advance screening ahead of its U.S. theater premiere in late February.  In his introduction, Robertson thanked executive producer Ron Howard, in attendance, as well as the many who contributed to the film, singling out director Daniel Roher for praise.  The 100-minute doc tells the story of a quintet that went from backing up Bob Dylan to becoming one of the most influential groups of its era. Inspired by Robbie Robertson’s 2017 bestselling memoir, Testimony, the film is a confessional, cautionary, and sometimes humorous tale of Robertson’s young life and the creation of one of the most enduring artists in the history of popular music. The documentary blends rare archival footage and interviews with many of Robertson’s friends and collaborators, including Bruce Springsteen, David Geffen, Eric Clapton, George Harrison, Martin Scorsese, Peter Gabriel, Ronnie Hawkins, Taj Mahal and Van Morrison, among others.  “I was so blessed and fortunate to work with The Band,” Robertson told the invite-only audience.  “They were something.”  Once Were Brothers: Robbie Robertson and The Band opens in Los Angeles and New York on 2/21 and nationally on 2/28.