1) Although they didn't know what it was called, everyone knew Brian Wilson had mental health problems but when he was on, he was on. People put up with the more difficult sides of dealing with Brian because they truly felt they were in the presence of pure musical genius such as someone like Mozart. He would ultimately be diagnosed with schizoaffective disorder, a mental health disorder resulting in ongoing hallucinations, depression, paranoia and sometimes mania. These symptoms kept getting worse and although Brian could still produce records, he no longer felt comfortable performing before a crowd.
2) Many doctors agree that if Brian wouldn't have had this disorder, there would never have been the Beach Boys. At the same time his brain was operating in places that were negatively impacting his life, it lit a portion of his brain that directly affected his musicality in all facets (i.e., ability to play numerous instruments, the ability to walk into a recording studio and strangely understand how the equipment worked just by watching someone at the controls for an hour. songwriting, etc.). This video clearly shows the maestro at work, and everyone followed his direction.
3) And this is what I like most about the video - the pure joy Brian had in the studio. You can see just how in love with music he was. As a music lover myself, I find it extremely moving.
Without further ado: