I thought this was capitalizing on the success of the film, Bohemian Rhapsody, but this has 2004 for as a release date, making it 15yrs old. So while I can't accuse them of bad research for omitting things that have happened since, I can say that reading the Wikis (and watching YT interviews and performances) for Queen and the members is faster than watching still photos, and interviews, all underscored with cheesy music.
Brian May re-submitted his doctoral thesis in 2006 and got his PhD in astrophysics in 2007 (but had started it right after his masters, which this failed to mention, making it sound like a master's, not doctoral, thesis). He has held academic and scientific positions since, including Imperial College London and was a scientific collaborator on the New Horizons Pluto and outer bodies mission. But it was well known, even in America, that he was an intellectual force, even back in the 70s, and we also knew all about his guitars and pickups. I guess if you are a very young Queen fan, you may not be aware of his talents, but they have always loudly been reported. So this film is for people who don't know much about Queen beyond their music or haven't seen Bohemian Rhapsody (not a crime).
So this is a 15yr old doc which doesn't have much to say that hasn't been said, even about Queen member's previous bands. And no musical examples, not even any Queen music. I can forgive that in a doc which is really well done or has some good insights, but this isn't it. It does Early Years, quick Queen, Freddie's Death. Yawn.
Yes, duh, Queen was a force (and record label's dream) of 4 guys who could all write hits, sing well, and were excellent musicians. But we've always known that.